100 entries under friendly topic. ×

7
impartial(adjective, feature, characteristic, good, honor)
7
innocent(adjective, open, simple, easy)
7
undisguised(adjective, good, clear, open, free)
6
transparent(adjective, open, direct, free, easy)
5
heart-to-heart(adjective, open, direct, free, pleasant)
4
openhearted(adjective, open, free, appropriate)
3
glowing(adjective, feeling, pleasant, keen)
3
unconcealed(adjective, open, direct, free, easy)
3
undissembled(adjective, open, appropriate, honest)
3
unqualified(adjective, complete, flat, appropriate)
2
jovial(adjective, person, pleasant, warm)
2
lay it on the line(expression, adjective, idiom, good, open)
2
neighborly(adjective, person, open, pleasant)
2
objective(adjective, good, open, reasonable)
2
responsive(adjective, person, pleasant, keen)
2
unbiased(adjective, good, open, reasonable)
2
up-front(adjective, open, simple, easy)
1
affable(adjective, pleasant, warm, energetic)
1
affectionate(adjective, close, correct, pleasant)
1
agreeable(adjective, pleasant, appropriate, warm)
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APASmart Define. (2016). sincere thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sincere/thesaurus/synonyms
ChicagoSmart Define. 2016. "sincere thesaurus" https://smartdefine.org/sincere/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sincere thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sincere/thesaurus/synonyms>.
MLASmart Define. "sincere thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/sincere/thesaurus/synonyms>