Synonyms|96Antonyms|1|Broader|0Narrower|0Related|14

68 entries under underground topic. ×

1
secret(adjective, sensitive, clandestine, undisclosed)
1
secretive(restricted, clandestine, discreet, undisclosed)
1
sly(clandestine, undisclosed)
1
sneak(close, restricted, inside, clandestine)
1
sneaky(clandestine, undisclosed)
1
sub-rosa(close, sensitive, clandestine, undisclosed)
1
top secret(expression, close, sensitive, inside, clandestine)
1
unacknowledged(close, sensitive, inside, clandestine)
1
under-the-table(sensitive, clandestine, undisclosed, sub-rosa)
1
underhanded(clandestine, undisclosed)
0
abstruse(clandestine, undisclosed)
0
ambiguous(clandestine, undisclosed)
0
arcane(clandestine, undisclosed)
0
cloak-and-dagger(clandestine, undisclosed)
0
closet(clandestine, undisclosed)
0
clouded(clandestine, undisclosed)
0
conspiratorial(clandestine, undisclosed)
0
covered(clandestine, undisclosed)
0
deep(clandestine, undisclosed)
0
enigmatical(clandestine, undisclosed)
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APASmart Define. (2015). in ambush thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/in_ambush/thesaurus/synonyms
ChicagoSmart Define. 2015. "in ambush thesaurus" https://smartdefine.org/in_ambush/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, in ambush thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/in_ambush/thesaurus/synonyms>.
MLASmart Define. "in ambush thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/in_ambush/thesaurus/synonyms>