Synonyms of unresponsive

Adjective

1. unresponsive (vs. responsive), refractory, insensitive, insensitive

usage: not responding to some influence or stimulus

2. unresponsive, cool (vs. warm)

usage: aloof or indifferent; "was unresponsive to her passionate advances"

3. unresponsive, unsusceptible (vs. susceptible), insusceptible

usage: not susceptible to suggestion or influence