か

indicates a question

indicates an embedded question; indicates an indirect question

or; whether or not; either ... or ...

some- (e.g. something, someone)

hmm; huh; I wonder (if, why, etc.); it might (be); maybe; perhaps it's (because of); could it be (that)

shouldn't we ...?; why don't we ...?; what about ...?; how about ...?; let's ...; may I ...?; could you ...?

some (amount); roughly; about; circa; more or less; or so

won't you ...?; why don't you ...?; couldn't you (e.g. have done differently)?; shouldn't you ...?

why should ...?; why would ...?; would I (really) ...?; who could have (guessed, foreseen, etc.) ...?; how could ...?; how should ...?

OK?; (you) understand?; got it?; really?; right?; didn't (I, you, etc.) ...?

oh; wow; how (incredible, strongly, badly, etc.)

come to think of ...; ... you say?; ah; now that (you, it, etc.) ...

very

-al; -ial; -ic; -ical; -ish; -y

in that way