To attempt, undertake (a deed). Also with sentence as obj.: To take care, see (that).

To make (a possession, title, etc.) sure; to assure, secure; also, to attach (a person) securely. Const. to, unto. Obsolete.

Without construction: to make something certain as an end or result; to remove the possibility of failure or doubt. Chiefly as infinitive of purpose.

transitive. To make certain of obtaining (a particular end or result); to ensure. Also intransitive.

To guarantee as true, make oneself answerable for (a statement). To promise or predict as certain. Also, of a thing: To be a sure presage of. Obsolete…

To make certain the occurrence or arrival of (an event); to ensure.

To make certain, assure.

transitive. To make certain, to secure, to guarantee (some thing, event, etc.): = assure, v. 5 7a, ensure, v. 8 9.

To secure, make sure or certain of; to make fast, fix firmly.

To make certain the occurrence or arrival of (an event), or the attainment of (a result); = assure, v. 5.

To decide irrevocably (the fate of a person or thing); to complete and place beyond dispute or reversal (a victory, defeat, etc.).

with infinitive or object clause: To engage to do something; to warrant or ensure that something will happen or has happened.

transitive. colloquial (originally and chiefly U.S. Sport.) To win (a game, championship, etc.); to secure (victory). Now also more generally: to…