It should be hyphenated.
in-house - two words, hyphenated.
Hyphenated
No, "self respect" is not a hyphenated word. It is typically written as two separate words.
It should be hyphenated.
The phrase is two words, counter offer (counter being a noun adjunct).This does not mean that it does not often appear as a single word, counteroffer -- only that this use is, at present, erroneous English.
"Handmade" is one "compound word", sometimes hyphenated as "hand-made"; not to be confused with handmaid, which is NOT hyphenated.
There is no general rule.
Underdeveloped should be written as one word, not two words or hyphenated. I hope this answered your question. :)
No, "world leader" is not hyphenated. It is typically written as two separate words when used as a noun phrase. However, if used as a compound adjective before a noun, it can be hyphenated as "world-leader status."
They are two words conjoined to be one.
The term "lookout" is typically written as one word when referring to a person or a place from which one observes. However, when used as a verb phrase, such as "look out," it is written as two separate words. So, whether it's hyphenated depends on the context in which it is used.
It is one word parenthood, not hyphenated.