Day - to -day might be hyphenated but in my spelling it is. I think day to day should not be hyphenated. The end
If you're using it as an adjective then it should be hyphenated: day-to-day. Otherwise, it shouldn't be.
Yes it should be hyphenated.
Yes, it should be hyphenated.
Yes it should be hyphenated.
yes check-up 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.