no
Yes, "pre-school" is a hyphenated word.
Pre-polishing is likely a hyphenated word.
Pre construction - two words not hyphenated.
Yes, it should be pre-qualify.
The word desperate hyphenated
It is not one nor two words. It is hyphenated, just as it is written in the question.
Light-Headed is a hyphenated word.
The word "self-confidence" is hyphenated.
No, "hardworking" is not hyphenated.
No it is not, I see it both ways, pre-med or pre-medical and premed or premedical.
"Left-handed" is a hyphenated compound word.
Both the full word and the hyphenated form are accepted.