Synonyms of undemonstrative

1 Syllable
chill
2 Syllables
frigid, offish, withdrawn, annoyed, distant, chilly, aloof, offhand
3 Syllables
impudent, incurious, lukewarm, reserved, insolent, standoffish, offended, procacious, remote, unfriendly, phlegmatic, reticent, restrained
4 Syllables
impertinent, self-controlled, self-restrained, inhibited, unsociable, indifferent, unwelcoming, apathetic, solitary, unaffable
5 Syllables
unenthusiastic, uninterested, unexpansive, unemotional, unapproachable, unresponsive, unexcitable
6 Syllables
uncompanionable
7 Syllables
uncommunicative