30 entries under adjective topic. ×

3
subterraneous
3
surreptitious
3
ulterior
3
undercover
3
underground
3
unrevealed
2
sub-rosa
2
under-the-table
1
protected
0
secure
<12>
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APASmart Define. (2015). covert thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/covert/thesaurus/related
ChicagoSmart Define. 2015. "covert thesaurus" https://smartdefine.org/covert/thesaurus/related (accessed September 26, 2026).
HarvardSmart Define 2015, covert thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/covert/thesaurus/related>.
MLASmart Define. "covert thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/covert/thesaurus/related>