In phrases, asto make (hold, pay, keep,†yieldor break) a vow.

To violate, do violence to; to fail to observe or keep; to transgress. (The opposite of to keep sacred… to break day: to fail to keep an appointed…

In phrases relating to making, keeping, or breaking a promise, trust, oath, etc., as to keep (also †hold) (one's) faith, to break (one's) faith, to…

To go back on what one has said. Obsolete.

to break touch: to break a promise, act unfaithfully; to break faith with a person. Cf. phrases 1c phrases 1d(a). Obsolete.

(intransitive) to fail to meet an obligation.

intransitive. To go back on an agreement; to renege. Now rare.

intransitive. To withdraw from a contract, agreement, or promise; to renege, recant, or back out. Chiefly with from.

intransitive. To deviate, diverge; to depart from.

intransitive. Frequently with on. Chiefly U.S. To change one's mind; to go back on a promise, undertaking, or contract.

intransitive with off or away: To slink away, sneak off. Also, to fall away from one's engagement.

‘To retreat from a bargain or engagement, make excuses, prevaricate’ (Eng. Dial. Dict.).

To escape from or extricate oneself out (of a situation, obligation, etc.), esp. dishonourably; to welsh on. Also with one's way.