to go in; to come in / 要る: to be necessary, to be required

to enter, go into, get into a place or a thing / to join a group or organization / to be contained (in), to be included (in) / to be a member of a group, set, category

whatchamacallit, X

What? What did you say?

anything; whatever one likes

something

any

above all / no matter how you say it / at any rate / after all is said and done

if you don't mind, if you like, if you're so inclined

nothing