Synonyms for undercover
- adjective
Most common
All synonyms
Adjective
1. Clandestine
clandestine, covert, secret, surreptitious, cloak-and-dagger, hush-hush, hugger-mugger, mysterious, furtive, stealthy, hole-and-corner, sub rosa, abstruse formal, concealed, sly, sneaky, underhand, slinky
Other
Definitions
- adj. 1
Performed or happening in secret.
Related words
- Phrases
- undercover car
Example sentences
- secret Tom happened to let out the secret to his friends.
- covert We have been sent on a covert mission.
- clandestine Sami and Layla began a clandestine relationship.
- surreptitious The surreptitious gesture went unnoticed by the rest of the room.
- unmarked Sami was drinking alcohol from an unmarked bottle.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| undercover | rising | |
| secret | rising | |
| covert | rising | |
| clandestine | rising | |
| surreptitious | rising | |
| unmarked | rising |
Use in printed books, per decade from 1850 to 2019.
By length
- 3 letters
- sly1
- 6 letters
- secret2, covert2, sneaky2, slinky2
- 7 letters
- furtive2
- 8 letters
- unmarked2, stealthy2, abstruse2
- 9 letters
- concealed2, underhand
- 10 letters
- mysterious4
- 11 letters
- clandestine3
- 13 letters
- surreptitious4
The small number after each word is its number of syllables (secret2 = 2 syllables).
In other languages
- Français
- en civil