1
fitful(melancholy, miserable, unstable, changeable, temperamental)
1
flighty(melancholy, miserable, unstable, changeable, temperamental)
1
flinty(adjective, strong, hard, tough, severe)
1
formal
1
fretful(adjective, sullen)
1
frown
1
frowned
1
frowns
1
gloom
1
glooming
1
glower
1
glowered
1
glumness
1
grating
1
grim-faced
1
grim-visaged
1
grum
1
hang-tough(adjective, strong, hard, tough, severe)
1
hard-boiled(adjective, strong, hard, tough, severe)
1
hard-core(adjective, strong, hard, tough, severe)
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APASmart Define. (2015). frowning thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/frowning/thesaurus/synonyms
ChicagoSmart Define. 2015. "frowning thesaurus" https://smartdefine.org/frowning/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, frowning thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/frowning/thesaurus/synonyms>.
MLASmart Define. "frowning thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/frowning/thesaurus/synonyms>