unwilling to talk; taciturn; refusing to speak

The quality of being untalkative.

Not talked (used with prepositions, e.g. untalked-of, untalked-to, untalked-about).

Not talkative; taciturn; reticent. / That cannot be talked of; unspeakable.

present participle of untalk

(computing) To cease to transmit signals.

Third-person singular simple present indicative form of untalk