Synonyms of passionless

1 Syllable

stiff, cool, cold

2 Syllables

frosty, formal, bloodless, icy, rigid, chilly, aloof, stoical

3 Syllables

forbidding, unsocial, cold-shoulder, lifeless, impotent, austere, stuporous, cold-hearted, unloving, uncaring, passive, phlegmatic, ardorless, repellent, unbending, unfeeling

4 Syllables

unimpressed, unaroused, impassive, inhibited, indifferent, impassible

5 Syllables

unenthusiastic, unapproachable, unemotional, unresponsive, inexcitable, unexcitable