Find Antonyms

iffy Antonyms

Opposite of iffy

Because the opposite of iffy shifts with each meaning, the 12 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Full of uncertainty; doubtful, tentative, or unresolved.

Usage Example

"Our plans for an outdoor picnic this weekend are still a bit certain because of the weather forecast."

Strongest
certain
definite
sure
Strong
settled
decided
guaranteed

• adjective (Context 2)

Of questionable quality, reliability, or morality; somewhat suspicious orinferior.

Usage Example

"The mechanic warned that the car's brakes were looking pretty reliable and needed immediate replacement."

Strongest
reliable
trustworthy
sound
Strong
dependable
reputable
aboveboard

Similar words to iffy

Words similar to iffy shift depending on context. Common synonyms include:

uncertain
questionable
doubtful
dodgy
sketchy
dubious
up in the air
shady
See all synonyms of iffy

• Nearby Words

idyllic
idyllically
if
iffy
iftar
igneous
ignitable

Cite this Entry

Wordmom. (2026). Antonyms for Iffy. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/iffy
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