Synonyms of unimpassioned

1 Syllable
plain, calm, cold, flat, stoic, dry, dull
2 Syllables
prosaic, factual, sober, serious, naked, stolid, deadpan, earthy, prosy
3 Syllables
lifeless, practical, mundane, pragmatic, phlegmatic, down-to-earth, cold-blooded, feasible, hard-boiled
4 Syllables
objective, unaffected, impassive, temperate, apathetic, impersonal, matter-of-fact, unvarnished, emotionless
5 Syllables
nonemotional, unidealistic, unsentimental
7 Syllables
unimaginative