Find Synonyms

unreliable Synonyms

Another word for unreliable

Choosing another word for unreliable depends on context, so the 15 synonyms and similar words below are separated across 2 exact definitions and ranked by match 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 undependable that we had to hire someone else to finish the renovation."

Strongest
undependable
untrustworthy
Strong
irresponsible
flighty
fickle
inconstant
flaky

• 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 inaccurate."

Strongest
inaccurate
Strong
inconsistent
erratic
unsound
questionable
dubious
suspect
fallible

Opposites of unreliable

The opposite of unreliable shifts depending on context. Common opposites include:

reliable
dependable
trustworthy
accurate
consistent
responsible
credible
steadfast
See all opposites of unreliable

• Nearby Words

unrelenting
unrelentingly
unreliability
unreliable
unreliableness
unreliably
unrelieved

Cite this Entry

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