(bound form) to swear; to vow; to pledge to follow through on one's word

(bound form) an oath or a solemn vow; a pledge made to others

(bound form) firmly; absolutely; used to describe a resolute determination, especially in expressions meaning "never to give up" or "refusing to coexist"

(bound form) to caution or exhort troops or followers before battle or on a solemn occasion