how

adverb

1. in what manner or way; by what means
2. in what state or condition
3. for what reason or purpose; why: how is it that you don't know?
4. by what name
5. with what meaning; to what effect
6. to what extent, degree, amount, etc.
7. at what price
8. ☆ Informal what: usually a request to repeat something said

Origin: ME hwu, hu < OE, akin to OHG hweo (Ger wie), Goth hwai-wa < IE interrogative base *kwo-, *kwe- > why, who, L quo, Sans kā

conjunction

1. the manner or way in which: show us how you did it
2. the state or condition in which: ask him how he's been
3. the extent, degree, amount, etc. to which: do you know how I despise you?
4. in whatever manner or way: judge him how you will
5. Informal that: he told us how he was happy about it

noun

interjection