intransitive. Of a machine, implement, etc.: to remain still or motionless; to stop moving, working, turning, etc.; not to be operated or used. Now…

intransitive. Of a clock, clockwork mechanism, etc.: to lose its motive power, become unwound; to cease to go.

Of a machine, etc.: To cease working or going. Also to stop dead.

intransitive (Mechanics) Also with up. Of a machine or mechanism: to stick, jam, or lock fast; to become unworkable, as by reason of undue heat or…

colloquial. to go phut: to break down, malfunction; to come to a sudden end; to end in failure, come to grief.

transitive. To disconnect or switch off (an electric circuit, etc.). Also intransitive, to switch off; to cease operating.

intransitive. To break down, give out, fail, or show signs of failing; to die, collapse, or lose consciousness. Also figurative. Also with out.

transitive and intransitive. To cut out (see to cut out 18 at phrasal verbs below).

intransitive. Of a mechanism or the like: to undergo a sudden change of state; to operate or (also trip out) cease to operate.

intransitive. Originally (U.S. Journalists' slang): (of a couple) to become estranged, to separate, divorce. Later also more generally: to come to…