With reference to a person, or occasionally an animal: by natural, innate, or inherent instinct, impulse, feeling, or tendency. Modifying a verb.

In accordance with, or by the operation of, natural laws or causes.

In an instinctive manner; by instinct; by some innate prompting; without conscious thought or purpose.

Without other determining force than natural character or tendency; naturally, spontaneously.

poetic as adv. = instinctively, adv.

off the wall (also with hyphens used attributive): unorthodox, unconventional; instinctive, intuitive, off the cuff. (See also quot. 1966.) Also…