200 entries under adjective topic. ×

2
awkward
2
chicken-hearted(weak, spineless, gutless)
2
chicken-livered
2
confused(shy, timid)
2
constrained(shy, hesitant, timid, unconfident)
2
craven(weak, spineless, gutless)
2
decent(soft, shy, meek, frugal)
2
detached(indifferent, unfriendly, aloof, distant)
2
gutless(weak, spineless)
2
hesitating(uncertain, shy, doubtful, hesitant)
2
plain(soft, shy, meek, frugal)
2
reclusive(quiet, gentle, aloof, peaceful)
2
secretive(secret, sneaky, stealthy)
2
silent(quiet, simple, indifferent, humble)
2
submissive(soft, shy, meek, frugal)
2
taciturn(quiet, gentle, aloof, peaceful)
2
uncomfortable
2
uneager(uncertain, modest, humble, shy)
2
uninvolved(indifferent, detached, aloof, distant)
2
unsocial(indifferent, modest, humble, detached)
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APASmart Define. (2016). diffident thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/diffident/thesaurus/synonyms
ChicagoSmart Define. 2016. "diffident thesaurus" https://smartdefine.org/diffident/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, diffident thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/diffident/thesaurus/synonyms>.
MLASmart Define. "diffident thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/diffident/thesaurus/synonyms>