yes , no i dont know
In American English, yes, it is one word. In British English it is hyphenated as kind-hearted.
"Left-handed" is a hyphenated compound word.
Yes. It is a hyphenated compound word.
"Wheelchair" is a compound word, not hyphenated.
No
The adjective is seen both as hyphenated "warm-hearted" and as one word "warmhearted" (kindly, generous). (the spell-checker here prefers the one-word form)
No, kindhearted (single compound word) is an adjective, a word that describes a noun; for example, a kindhearted person, a kindhearted gesture.
yes it is if you are asking it with hyphenated in a compound word this is the answer to your problem.
Yes, it is a hyphenated compound half-eaten
Yes, though it is often hyphenated as man-made, which is a type of compound word.
good-looking, hard-working
The compound noun 'tryout' is written as either a single word or a hyphenated word, 'try-out'. Either is acceptable.