1
retired(adjective, obscure, remote, isolated, hard-hearted)
1
secluded(adjective, obscure, remote, isolated, faraway)
1
secret(adjective, obscure, remote, faraway, far-off)
1
secretive(adjective, mysterious, private, reticent, unknowing)
1
secretly
1
separate(adjective, obscure, remote, isolated, hard-hearted)
1
sequestered(adjective, obscure, remote, isolated, faraway)
1
silent(adjective, mysterious, private, reticent, taciturn)
1
sotto voce
1
sub
1
sub rosa
1
tandem
1
telescopic(adjective, obscure, distant, remote, isolated)
1
tight-lipped(adjective, mysterious, private, reticent, taciturn)
1
unapproachable(adjective, obscure, remote, faraway, far-off)
1
under the radar
1
underground
1
unforthcoming(adjective, mysterious, private, reticent, taciturn)
1
unnoticed(adverb, unobtrusively)
1
ways(adjective, obscure, remote, far, faraway)
11 years ago|895 views|share |citing 
APASmart Define. (2015). in the background thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/in_the_background/thesaurus/synonyms
ChicagoSmart Define. 2015. "in the background thesaurus" https://smartdefine.org/in_the_background/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, in the background thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/in_the_background/thesaurus/synonyms>.
MLASmart Define. "in the background thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/in_the_background/thesaurus/synonyms>