What does "mostly" mean?

Mainly or chiefly; for the most part; usually, generally, on the whole.

What is a synonym for "mostly"?

Common synonyms include: by and large, for most part, a fortiori, above all, all in all, all in all.

//ˈməʊstli// adv

adv ·Moderate ·College level

Adverb

1
Mainly or chiefly; for the most part; usually, generally, on the whole. not-comparable
"They're mostly good people, although they have made a few mistakes."
2
To the greatest extent; most. not-comparable, obsolete
"She was to be their chosen visitor, she was to be for weeks under the same roof with the person whose society she mostly prized [...]!"