Silly, foolish, stupid. Cf. innocent, adj. n., silly, adj. n.adv. Said of beasts.

Destitute of sense or intelligence; irrational.

Of an animal: lacking the capacity for reason, irrational. Also: wild, untamed. Obsolete.

= insensible, adj. 5.

Of an animal, species, etc.: lacking in intelligence, spirit, or liveliness. Also of animals generally, as opposed to humans: †lacking the…