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Definitions

on the inside

ADJECTIVE
shrewd
Synonyms
STRONGEST
astute cagey canny crafty farsighted ingenious judicious keen penetrating perceptive probing prudent sensible sharp slick sly smart wily wise
WEAK
acute argute artful astucious brainy calculating cunning cutting deep discerning discriminating foxy heady in the know inside knowing on top of perspicacious piercing profound quick-witted sagacious savvy shark slippery smooth streetwise tricky underhand up on wised up
Antonyms
STRONGEST
blunt dull foolish honest idiotic ignorant inept obtuse senseless slow stupid unclever unintelligent unreasonable unstylish unwise
WEAK
frivolous naive unthinking

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.

They found that phosphatidylserine, a fatty molecule normally located on the inside of a neuron's membrane, had shifted to the outer surface.

From Science Daily • Apr. 11, 2026

In some cities, Jews say they are covering their Kippahs, or head coverings, in public or placing their mezuzas, which are usually affixed outside doorjambs, on the inside.

From The Wall Street Journal • Mar. 27, 2026

Ahead of schedule after a 55.56-second first 400m, Hodgkinson strode off the front and never appeared in danger of losing touch with the green wavelights representing the record time on the inside of the track.

From BBC • Feb. 19, 2026

“As somebody on the inside, they just don’t make sense,” he said, in answer to a question from Nicole at his most recent press conference in late January.

From Barron's • Feb. 19, 2026

That was interesting, because Mom always got extremely polite and very Southern when she was hopping mad on the inside.

From "Caterpillar Summer" by Gillian McDunn