INCOMMUNICATIVE
uncommunicative, incommunicative
(adjective) not inclined to talk or give information or express opinions
Source: WordNet® 3.1
Etymology
Adjective
incommunicative (comparative more incommunicative, superlative most incommunicative)
Uncommunicative.
Source: Wiktionary
In`com*mu"ni*ca*tive, a.
Definition: Not communicative; not free or apt to impart to others in
conversation; reserved; silent; as, the messenger was
incommunicative; hence, not disposed to hold fellowship or
intercourse with others; exclusive.
The Chinese . . . an incommunicative nation. C. Buchanan.
– In`com*mu"ni*ca*tive*ly, adv.
– In`com*mu"ni*ca*tive*ness, n. Lamb.
His usual incommunicativeness. G. Eliot.
Source: Webster’s Unabridged Dictionary 1913 Edition