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walk out

part of speech: phrase
definition 1: to leave suddenly, esp. as an indication of anger or protest.
When the subject matter became controversial, some of the audience members walked out.When one of the workers was fired, several others walked out.
definition 2: to go on a planned strike.
At precisely 10:00 am, the union members walked out.
definition 3: to abandon someone despite one's responsibilities or commitments (usu. fol. by "on").
He walked out on his wife and children five years ago and they haven't seen him since.He was devastated after his wife walked out.
definition 4: (chiefly British; old-fashioned) to go out on dates.
Her parents had no idea she was walking out with him.