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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
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 unwearied unwearying vigorous
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.

While the subject matter is drawn from traditional Japanese art and the other materials are ancient in their legacy, these quiet meditations are hyper contemporary.

From The Wall Street Journal • Feb. 27, 2026

However, investors are also hyper focused on the companies they think could be put in a bind as the tech continues to perform better and better.

From Barron's • Feb. 23, 2026

When the Sun gets all hyper with magnetic activity, it throws out huge bursts of super-hot, super-fast gas called plasma.

From Space Scoop • Nov. 19, 2025

Curiously, the style game of Punjabi musicians - from hip-hop, R&B, bhangra pop, fusion, Punjabi rap, reggae or filmy music - has also remained rooted and androgynous, instead of being hyper masculine.

From BBC • May 31, 2025

The centaur had a tendency to go completely hyper over trivialities.

From "Artemis Fowl" by Eoin Colfer