Synonyms for unreliable
- adjective
Most common
All synonyms
Adjective
1. Undependable
undependable, untrustworthy, uncertain, irresponsible, erratic, dangerous, unsafe, temperamental, false, fickle, shaky, unsound UK, unfaithful, sporadic, treacherous, unstable, precarious, slippery
Definitions
- adj. 1
Not reliable.
Example sentences
- uncertain Tom told me that he's uncertain what he should do.
- irresponsible It is irresponsible of you to break your promise.
- untrustworthy You can believe him. He's not an untrustworthy person.
- undependable Tom told me that he thought Mary was undependable.
- sleazy Tom's a sleazy letch, and he gives Mary the creeps.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| unreliable | steady | |
| uncertain | steady | |
| irresponsible | falling | |
| untrustworthy | rising | |
| undependable | falling | |
| sleazy | rising |
Use in printed books, per decade from 1850 to 2019.
By length
- 5 letters
- false1, shaky2, flaky2
- 6 letters
- unsafe2, fickle2, sleazy2
- 7 letters
- erratic3, unsound2
- 8 letters
- unstable3, slippery3, sporadic3
- 9 letters
- dangerous3, uncertain3
- 10 letters
- precarious4, unfaithful3
- 11 letters
- treacherous3
- 12 letters
- undependable
- 13 letters
- irresponsible5, untrustworthy4, temperamental4
The small number after each word is its number of syllables (shaky2 = 2 syllables).