To or towards the inside of. / To or towards the region of. / Against, especially with force or violence. / Indicates transition into another form or substance. / After the start of.

(slang, euphemistic) Abbreviation of ass into gear

(colloquial) To become enthusiastically involved in.

(transitive) To put (someone) into (a particular state, emotion etc.). / (intransitive) To cohere with; to accord with, to be in keeping with.

(idiomatic, colloquial) To go to bed; to go to sleep (especially at, or around midnight). / (idiomatic, colloquial) Used to indicate a curfew, or the time by which one must depart.

(transitive, idiomatic) Have a controlling influence over.

(intransitive) To be punished or chastised for doing something prohibited. / (transitive) To cause to be punished. / (intransitive) To fall into difficulty. / (intransitive) To become pregnant.

Used other than figuratively or idiomatically: look into. / (idiomatic) to investigate, explore, or consider

(euphemistic) To change into clothes that are suitable to be stripped off by a lover.

(idiomatic, intransitive) To transform into; become. / (idiomatic, transitive) To transform into; cause to become.