28 entries under sober topic. ×

1
close(adjective, thoughtful, serious, sincere)
1
constant(adjective, thoughtful, serious, sincere)
1
deep(adjective, tough, severe, important, significant)
1
determined(adjective, intense, deliberate, thoughtful)
1
earnest(adjective, important, determined, serious)
1
firm(adjective, intense, deliberate, determined, thoughtful)
1
fixed(adjective, intense, determined, thoughtful)
1
for real(expression, adjective, thoughtful, serious)
1
grave(adjective, great, tough, severe, heavy)
1
intense(adjective, deliberate, determined, serious)
1
intent(adjective, intense, deliberate, determined, thoughtful)
1
mean business(expression, adjective, intense, deliberate, determined)
1
meaningful(adjective, tough, severe, important, significant)
1
no-fooling(adjective, determined, thoughtful, serious)
1
no-nonsense(adjective, thoughtful, serious, sincere)
1
resolute(adjective, intense, deliberate, determined, thoughtful)
1
resolved(adjective, thoughtful, serious, sincere)
1
sedate(adjective, thoughtful, serious, sincere)
1
serious(adjective, great, heavy, important, significant)
1
solemn(adjective, thoughtful, serious, sincere)
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APASmart Define. (2011). playing hard ball thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/playing_hard_ball/thesaurus/synonyms
ChicagoSmart Define. 2011. "playing hard ball thesaurus" https://smartdefine.org/playing_hard_ball/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2011, playing hard ball thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/playing_hard_ball/thesaurus/synonyms>.
MLASmart Define. "playing hard ball thesaurus" 24 May 2011. Web. 27 September 2026. <https://smartdefine.org/playing_hard_ball/thesaurus/synonyms>