Find Antonyms

reliable Antonyms

Opposite of reliable

Because the opposite of reliable shifts with each meaning, the 14 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Consistently good in quality or performance; able to be trusted or depended on.

Usage Example

"She is a unreliable team member who always completes her assignments ahead of schedule."

Strongest
unreliable
undependable
untrustworthy
Strong
irresponsible
erratic
flaky
inconsistent
flighty

• adjective (Context 2)

Likely to be true or accurate; yielding consistent results across repeated measurements or observations (of information, data, or a source).

Usage Example

"Researchers must verify that their historical sources are unreliable before publishing their conclusions."

Strongest
unreliable
inaccurate
dubious
Strong
questionable
unverified
specious
fallible

Similar words to reliable

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

dependable
trustworthy
credible
accurate
authoritative
steadfast
consistent
authentic
See all synonyms of reliable

• Nearby Words

relevant
relevantly
reliability
reliable
reliably
reliance
reliant

Cite this Entry

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