"Check-in" should be hyphenated when used as a noun or an adjective, such as "The check-in process was smooth." However, when used as a verb, it is typically written as two separate words: "Please check in at the front desk."
yes check-up should be hyphenated
Yes, it should be hyphenated.
Yes it should be hyphenated.
Yes it should be hyphenated.
It should be hyphenated.
Yes it should be hyphenated.
"Field" is not hyphenated.
Yes it should be hyphenated.
Yes it should be hyphenated.
No it shouldn't be hyphenated.
Self-made should be hyphenated.
No it shouldn't be hyphenated. It is one word.