Webster's Revised Unabridged Dictionary · 1913

Cautelous

Cautelous , adjective

[French cauteleux, Late Latin cautelosus. See Cautel.]

1.
Caution; prudent; wary. [Obsolete]
Cautelous, though young. — Drayton
2.
Crafty; deceitful; false. [Obsolete] — Shakespeare