Definitions

hyper

[hahy-per] / ˈhaɪ pər /

ADJECTIVE

active

Synonyms

STRONGEST

aggressive alive bold busy determined diligent dynamic eager energetic engaged enthusiastic forceful intense keen lively quick ready resolute

STRONG

alert daring fireball jumping pushing rapid sharp whiz

WEAK

agile animated assiduous brisk bustling chipper dashing dexterous enlivened enterprising eventful forcible fresh frisky hard-working high-spirited industrious inventive nimble on the move perky persevering purposeful sprightly spry zealous

Antonyms

STRONGEST

afraid apathetic calm cowardly disinterested dispirited dull idle ignorant inactive indifferent irresolute lazy lethargic lifeless meek quiet slow sluggish stupid uneducated unenthusiastic weak

WEAK

abeyant dormant immobile inert quiescent

ADJECTIVE

anxious

Synonyms

STRONGEST

afraid apprehensive careful concerned distressed fearful fidgety jittery nervous restless scared uneasy uptight

WEAK

aghast antsy basket case bugged butterflies choked clutched disquieted disturbed dreading fretful hacked in a state in a tizzy in suspense jumpy nervy overwrought shaking shaky shivery shook-up shot to pieces solicitous spooked strung-out sweating bullets taut troubled unglued unquiet watchful wired worried sick wreck

Antonyms

STRONGEST

bold brave calm collected composed confident cool courageous happy inattentive quiet unafraid unconcerned unfearful unworried

WEAK

assured content indifferent peaceful tranqil unwilling

ADJECTIVE

distressed

Synonyms

STRONGEST

afflicted agitated anxious distraught jittery miffed perturbed shaky troubled

STRONG

bothered bugged concerned discombobulated distracted dragged exercised harassed peeved ripped saddened shook spooked tormented wired worried wrecked

WEAK

all torn up antsy basket case bummed out bundle of nerves cut up disconsolate distrait fidgety in a stew in a tizzy inconsolable jumpy shook-up shot down strung-out unconsolable unglued up the wall uptight wretched

Antonyms

STRONGEST

calm cool happy peaceful pleased untroubled

STRONG

unworried

WEAK

collected comforted glad joyful

ADJECTIVE

fidgety

Synonyms

STRONGEST

apprehensive impatient jittery jumpy restless uneasy

WEAK

antsy high-strung jerky nervous nervous wreck nervy on edge on pins and needles restive spooked spooky twitchy unrestful up the wall wired

Antonyms

STRONGEST

calm composed easygoing laid-back

WEAK

quiet relaxed restful resting still unmoving

ADJECTIVE

frantic

Synonyms

STRONGEST

agitated angry delirious distraught frenetic frenzied furious hectic mad overwrought weird

STRONG

distracted distressed

WEAK

at wit's end berserk beside oneself corybantic crazy deranged excited flipped-out fraught freaked-out hot and bothered hot under the collar in a stew in a tizzy insane out of control rabid raging raving shook-up unglued unscrewed unzipped violent weirded out wigged out wild wired worked-up zonkers

Antonyms

STRONGEST

balanced calm collected happy normal pleased sane

WEAK

composed docile peaceful tranquil

ADJECTIVE

frenetic

Synonyms

STRONGEST

frantic frenzied furious obsessive

WEAK

corybantic delirious demented distraught excited fanatical furibund in a lather insane lost it mad overwrought phrenetic rabid unbalanced unscrewed weirded out wigged out wild wired

Antonyms

STRONGEST

calm peaceful

WEAK

balanced

ADJECTIVE

hyperactive

Synonyms

STRONGEST

excitable high-strung

WEAK

overactive overzealous uncontrollable wild

ADJECTIVE

invigorating

Synonyms

STRONGEST

bracing exhilarating fascinating lively refreshing uplifting

STRONG

brisk charged energizing interesting quickening rejuvenating vitalizing

WEAK

aesthetic exhilarative fresh healthful high rejuvenative restorative salubrious tonic

Antonyms

STRONGEST

boring

WEAK

depressing dull enervating unstimulating

ADJECTIVE

lively

Synonyms

STRONGEST

animated bright buoyant bustling cheerful enjoyable entertaining festive frisky nimble peppy provocative refreshing spirited stimulating vigorous

WEAK

agile alert animate astir blithe blithesome bouncy brisk buzzing chipper chirpy complex dashing driving effervescent enterprising frolicsome full of pep gay go-go happy industrious involved jocund jumping keen merry perky pert quick rousing snappy sparkling sprightly spry stirring vivacious zippy

Antonyms

STRONGEST

apathetic depressed down dull gloomy heavy inactive lethargic sad somber unhappy unpleasant

WEAK

dispirited lifeless sleepy

ADJECTIVE

madding

Synonyms

STRONGEST

frantic

WEAK

agitated angry at wit's end berserk beside oneself corybantic crazy delirious deranged distraught excited flipped-out fraught freaked-out frenetic frenzied furious hectic hot and bothered hot under the collar hysterical in a stew in a tizzy insane mad out of control overwrought panic-stricken rabid raging raving shook-up unglued unscrewed unzipped violent weird weirded out wigged out wild wired worked-up zonkers

ADJECTIVE

on edge

Synonyms

WEAK

agitated anxious apprehensive beside oneself bundle of nerves edgy excited fidgety high-strung impatient in a tizzy jittery jumpy nerve-racking nervous nervous wreck overanxious restless stressful unnerved uptight wired worried wound-up

ADJECTIVE

overexcited

Synonyms

WEAK

high-strung

ADJECTIVE

overwrought

Synonyms

STRONGEST

frantic

WEAK

affected agitated all shook up beside oneself crazy distracted emotional excitable fired-up flipped-out freaked-out histrionic histrionical hot under collar hot-and-bothered in a state nervous neurotic on edge overexcited overstrung overworked spent steamed up stirred strung-out tense tired uneasy unstrung uptight weary wired worked-up worn wound-up

Antonyms

WEAK

calm collected cool rested unruffled

ADJECTIVE

rousing

Synonyms

STRONGEST

bouncy chirpy enthusiastic lively spirited zippy

STRONG

active alert animated brisk bustling busy buzzing dashing jumping refreshing stimulating

WEAK

astir bright buoyant energetic frisky full of pep industrious peppy perky snappy spry vigorous

Antonyms

STRONGEST

apathetic dispirited lethargic

STRONG

idle inactive lazy quiet sluggish

ADJECTIVE

spirited

Synonyms

STRONGEST

animated bold bright courageous energetic enthusiastic fearless fiery gutsy passionate peppy resolute spunky vigorous

STRONG

alert animate brave burning game jumping keen rocking sparkling

WEAK

active ardent audacious avid bouncy chirpy dauntless eager effervescent full of life gingery gritty high-spirited hot intrepid mettlesome nervy peppery plucky sharp snappy sprightly zappy zealous zesty zingy zippy

Antonyms

STRONGEST

afraid apathetic cold cool cowardly dull fearful idle inactive indifferent lethargic light meek shy timid tired unenthusiastic unexcited weak

STRONG

cautious

WEAK

depressed dispirited lazy unhappy unlively

ADJECTIVE

sprightly

Synonyms

STRONGEST

agile bouncy cheerful chirpy energetic jaunty lively peppy playful spry zippy

WEAK

active airy alert animate animated blithe breezy bright brisk cheery chipper clever dapper dashing fairylike frolicsome gay good grooving jolly joyous jumping keen keen-witted light nimble perky quick quick-witted saucy scintillating smart snappy spirited sportive swinging zappy zingy

Antonyms

STRONGEST

apathetic depressed inactive lethargic lifeless serious tired

WEAK

dull lazy

ADJECTIVE

temperamental

Synonyms

STRONGEST

capricious erratic excitable fickle headstrong high-strung impatient irritable mercurial moody ornery passionate petulant thin-skinned unpredictable unreliable unstable volatile

WEAK

changeable cussed easily upset emotional explosive fiery froward hotheaded hypersensitive in bad mood inconsistent mean neurotic sensitive ticklish touchy uncertain undependable variable willful

Antonyms

STRONGEST

calm constant dependable easygoing happy laid-back predictable reliable stable steadfast steady tolerant unchanging unvarying

WEAK

peaceful pleased

ADJECTIVE

tense

Synonyms

STRONGEST

agitated anxious apprehensive edgy excited jittery nervous restive shaky strained stressful uneasy

STRONG

choked clutched concerned moved moving shot unnerved wired worried worrying wreck

WEAK

beside oneself bundle of nerves fidgety fluttery high-strung hung up in a tizzy jumpy nerve-racking nervous wreck on edge overanxious overwrought queasy restless shot to pieces strung-out unquiet up the wall uptight white knuckled wound-up

Antonyms

STRONGEST

calm composed easygoing laid-back unafraid unworried

STRONG

happy untroubled

WEAK

limp limpid loose relaxed slack uncaring

ADJECTIVE

tireless

Synonyms

STRONGEST

energetic enthusiastic indefatigable resolute steadfast strenuous unflagging vigorous

WEAK

active ball of fire eager grind hard-working incessant industrious jumping on the go perky persevering untiring unwearied unwearying

Antonyms

STRONGEST

apathetic enervated idle inactive lethargic tired unenthusiastic weak weary

WEAK

beat worn-out

ADJECTIVE

untiring

Synonyms

WEAK

constant continued continuing dedicated devoted dogged eager beaver fireball firm go-go grind incessant indefatigable indomitable inexhaustible jumping patient perky persistent pertinacious plodding plugging resolute staunch steady strong tenacious tireless unceasing undeterred unfailing unfaltering unflagging unflinching unremitting unstinted unswerving unwavering unwearied

Antonyms

WEAK

failing irresolute tiring unpersevering

ADJECTIVE

unwearied

Synonyms

WEAK

active ball of fire eager energetic enthusiastic grind hard-working incessant indefatigable industrious inexhaustible jumping on the go perky persevering resolute steadfast strenuous unfailing unflagging untiring unwearying vigorous weariless

ADJECTIVE

vehement

Synonyms

STRONGEST

angry ardent emphatic enthusiastic fervent fierce forceful furious heated impassioned potent rabid violent zealous

WEAK

concentrated delirious desperate eager earnest exquisite fervid fiery forcible frantic hearty hopped up hot impetuous inflamed intense lively on the make powerful pronounced strong terrible vicious wild

Antonyms

STRONGEST

apathetic calm cool dispassionate gentle happy impotent indifferent ineffective lethargic meek mild moderate peaceful pleased unenthusiastic unexcited weak

WEAK

unpassionate

ADJECTIVE

weariless

Synonyms

WEAK

ADVERB

beyond

Synonyms

WEAK

above after ahead apart from as well as at a distance away from before behind besides beyond the bounds clear of farther free of good way off in addition to in advance of long way off more remote moreover on the far side on the other side out of range out of reach outside over over and above over there past remote superior to without yonder

Antonyms

STRONG

close here nearby within reach

WEAK

near

ADVERB

on edge

Synonyms

WEAK

anxious edgy fidgety high-strung impatient in suspense jittery jumpy nail-biting nerves on edge nervous skittish uneasy wired

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"More than half experienced physical symptoms including difficulty sleeping, headaches or excessive tiredness, while nearly two thirds reported behavioural changes such as distrusting others or hyper vigilance," Halkon said.

From BBC • Apr. 12, 2026

In this room, I am at times unsettled, at once tracking the movements of the actors while attempting to remain hyper aware of any sudden touch or scent.

From Los Angeles Times • Mar. 26, 2026

“This is a hyper sensitive topic,” said Mike Mayo, a bank analyst at Wells Fargo.

From The Wall Street Journal • Mar. 24, 2026

"Creating with musical teams is great, but hopping into a different realm and being hyper creative with full-stack developers, electrical engineers, mechanical engineers, world builders -- that is the ultimate level of creativity."

From Barron's • Mar. 18, 2026

She was as hyper as I was and super flexible as a gymnast, and her playful antics during practice made me laugh.

From "Courage to Soar" by Simone Biles

hyper

Example Sentences

Related Words