Synonyms for perfidious
- adjective
Most common
All synonyms
Adjective
Definitions
- adj. 1
Of, pertaining to, or representing perfidy; disloyal to what should command one's fidelity or allegiance.
Example sentences
- treacherous The weather can be very treacherous at this altitude.
- insidious It's a dangerous and insidious animal.
- unfaithful Dan discovered that his wife had been unfaithful.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| perfidious | steady | |
| treacherous | rising | |
| insidious | steady | |
| unfaithful | rising | |
| traitorous | rising |
Use in printed books, per decade from 1850 to 2019.
By length
- 5 letters
- false1
- 6 letters
- double2, untrue2
- 7 letters
- unloyal
- 8 letters
- slippery3, renegade3, disloyal3
- 9 letters
- dishonest3, insidious4, deceitful3, faithless, felonious4
- 10 letters
- unfaithful3, traitorous3, treasonous3
- 11 letters
- treacherous3, duplicitous4, treasonable
The small number after each word is its number of syllables (double2 = 2 syllables).