deliberate (adj.)
early 15c., "done with careful consideration," from Latin deliberatus "resolved upon, determined," past participle of deliberare (see deliberation). Meaning "slow, consciously unhurried" is attested by 1590s. Related: Deliberately.
deliberate (v.)
1540s, from Latin deliberatus, past participle of deliberare (see deliberation). Related: Deliberated; deliberating.