Find Antonyms

unreliable Antonyms

Opposite of unreliable

Because the opposite of unreliable shifts with each meaning, the 13 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Not able to be trusted or depended upon to fulfill obligations, keep promises, or act consistently.

Usage Example

"The contractor proved to be so reliable that we had to hire someone else to finish the renovation."

Strongest
reliable
dependable
trustworthy
Strong
responsible
steadfast
faithful
conscientious

• adjective (Context 2)

Consistently failing to function properly or produce accurate, predictable results (of a machine, system, or source of information).

Usage Example

"Historians are cautious about citing that chronicle because its dates are notoriously reliable."

Strongest
reliable
accurate
consistent
Strong
credible
sound
authentic
valid

Similar words to unreliable

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

undependable
untrustworthy
inaccurate
inconsistent
irresponsible
erratic
unsound
questionable
See all synonyms of unreliable

• Nearby Words

unrelenting
unrelentingly
unreliability
unreliable
unreliableness
unreliably
unrelieved

Cite this Entry

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