In-cau'tious, a.

(-kaw'shus), a. [Prefix in, not, and cautious; Lat. incautus.] Not cautious; not circumspect; not attending to the circumstances on which safety and interest depend; heedless.

You ... incautious tread On fire with faithless embers overspread. Francis.

Synonyms—Unwary; indiscreet; inconsiderate; imprudent; impolitic; careless; heedless; thoughtless; improvident.