The practice of being sexually or romantically unfaithful.

On two occasions; twice.

(transitive) To be unfaithful to one's (sexual) partner. / (transitive) To double-cross.

Dated form of timeline.

(idiomatic) To be confined in prison or a similar institution, typically for wrongdoing that violates the law.

(military) A fast marching pace of 120 thirty-inch steps per minute.

A personification of time as an old man, usually carrying an hourglass.

(set phrase) Time is an essential consideration (in regard to an action or response); haste is necessary.

(hydrology) The average time for which a particular molecule of water will remain in a body of water.

(astronomy) Time measured by the apparent diurnal motion of the vernal equinox; approximated by that based on the rotation of planet Earth relative to the seemingly fixed stars.