か

1. particle, at sentence end indicates a question
2. at the end of a subordinate clause indicates an embedded question; indicates an indirect question
3. as ...か...（か） or; whether or not; either ... or ...
4. after an interrogative some- (e.g. something, someone)
5. indicates uncertainty, conjecture, doubt, etc. hmm; huh; I wonder (if, why, etc.); it might (be); maybe; perhaps it's (because of); could it be (that)
6. indicates invitation, suggestion, or polite request; after a negative or volitional shouldn't we ...?; why don't we ...?; what about ...?; how about ...?; let's ...; may I ...?; could you ...?
7. indicates a rough amount some (amount); roughly; about; circa; more or less; or so
8. indicates indirect command or critique; usu. after a negative won't you ...?; why don't you ...?; couldn't you (e.g. have done differently)?; shouldn't you ...?
9. indicates irony or rhetorical question why should ...?; why would ...?; would I (really) ...?; who could have (guessed, foreseen, etc.) ...?; how could ...?; how should ...?
10. used to confirm or emphasize information OK?; (you) understand?; got it?; really?; right?; didn't (I, you, etc.) ...?
11. indicates surprise or strong emotion oh; wow; how (incredible, strongly, badly, etc.)
12. indicates (sudden) realization or recollection come to think of ...; ... you say?; ah; now that (you, it, etc.) ...
13. prefix, emphatic prefix; usu. before an adjective very
14. suffix, suffix forming adjectives or adverbs; after an uninflectable word -al; -ial; -ic; -ical; -ish; -y
15. adverb, archaic in that way

か · カ also 箇

1. counter, usually in kana, precedes the thing being counted; e.g. ３か月, ５か所; also written as ヶ or ケ counter used with Sino-Japanese words