kick in

(verb) enter a particular state. Synonyms: set in, kick in. Examples: "Laziness set in." "After a few moments, the effects of the drug kicked in."

(verb) contribute to some cause. Synonyms: contribute, give, chip in, kick in. Example: "I gave at the office."

(verb) open violently. Synonyms: kick in, kick down. Example: "Kick in the doors."