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Dictionary.com
Definitions

big idea

NOUN
action
Synonyms
STRONGEST
activity deal force life movement operation plan process reaction response
STRONG
agility alacrity alertness animation ballgame bit business bustle commotion dash energy enterprise flurry functioning game happening hoopla hopper industry liveliness motion occupation power proposition racket rush scene spirit stir stunt turmoil vigor vim vitality vivacity
WEAK
in the works
Antonyms
STRONGEST
idleness inaction inactivity
STRONG
calm calmness dullness harmony indolence laziness lethargy peace quiet repose rest slowness stillness
WEAK
apathy inertia stoppage
NOUN
concept
Synonyms
STRONGEST
approach conception image notion perception theory thought view
STRONG
abstraction apprehension brainchild conceit conceptualization consideration hypothesis impression intellection slant supposition twist wrinkle
WEAK
brain wave fool notion
Antonyms
STRONGEST
concrete
STRONG
proof reality
WEAK
being
NOUN
deed
Synonyms
STRONGEST
accomplishment act action adventure fact feat reality truth
STRONG
ballgame bit byplay cause commission crusade do enterprise exploit game performance plan quest stunt thing winning
WEAK
happenin' securing tour de force
Antonyms
STRONGEST
cessation failure idleness inaction inactivity inertia lie repose rest stoppage
NOUN
enterprise
Synonyms
STRONGEST
activity business company firm operation program project trade venture
STRONG
action affair attempt baby bag ballgame bit campaign cause concern crusade deal deed do effort endeavor engagement essay establishment game happening hazard house move outfit performance plan plunge proposition purpose pursuit risk scheme speculation stake striving stunt task thing try work
WEAK
biggie pet project
Antonyms
STRONG
pastime
WEAK
unemployment
NOUN
perception
Synonyms
STRONGEST
approach attention attitude awareness concept consciousness feeling image impression judgment knowledge notion opinion recognition sense taste thought viewpoint
STRONG
acumen apprehension brainchild conceit conception discernment flash grasp insight intellection light observation perspicacity picture plan sagacity sensation study
WEAK
apprehending brain wave realizing
Antonyms
STRONGEST
concrete ignorance stupidity thing unconsciousness
STRONG
misconception misunderstanding
NOUN
proposal
Synonyms
STRONGEST
bid idea motion offer outline overture plan program project proposition recommendation scheme
STRONG
angle design feeler layout pass picture pitch proffer scenario setup tender terms
WEAK
brain child game plan
Antonyms
STRONGEST
condemnation refusal
NOUN
purpose
Synonyms
STRONGEST
ambition aspiration desire determination direction function goal idea intent objective plan principle project reason scheme scope view wish
STRONG
animus bourn calculation design destination dream drift end expectation hope mecca mission object point premeditation proposal proposition prospect resolve will
WEAK
intendment ulterior motive whatfor where one's headed whole idea why and wherefore whyfor
Antonyms
STRONGEST
dislike hate hatred
STRONG
beginning start
NOUN
suggestion
Synonyms
STRONGEST
approach charge idea instruction invitation motion opinion proposal proposition recommendation resolution tip
STRONG
advancement angle bid bit brainchild commendation exhortation gimmick injunction lead outline pitch presentation proffer reminder scheme setup steer submission telltale tender testimonial thesis tip-off
WEAK
game plan hot lead sneaking suspicion
Antonyms
STRONGEST
condemnation question
WEAK
declaration demand order telling

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.

But then, the agency people unveiled their big idea: to create a campaign centered around reanimated digital avatars of our dead loved ones.

From Slate • Apr. 23, 2026

The big idea was to take Tesla’s learnings from its self-driving technology, which uses software and cameras to autonomously drive automobiles.

From The Wall Street Journal • Jan. 3, 2026

“This is a really big idea that makes a lot of sense,” said Maggie Coulter, senior attorney with the nonprofit Center for Biological Diversity’s Climate Law Institute.

From Los Angeles Times • Jul. 7, 2025

While waiting for a delayed train on a cold railway station platform back in 2016 a 30-something tech enthusiast had his big idea.

From BBC • Dec. 21, 2024

“What was this big idea you had, anyway?”

From "Insignificant Events in the Life of a Cactus" by Dusti Bowling