The meaning of MOSTLY is for the greatest part : mainly. How to use mostly in a sentence.

Mostly is an adverb that means ‘mainly’: … The story seemed to be mostly true. The group is mostly teenagers, with a few younger children. In research on the policy impact of partisan governments, …

You use mostly to indicate that a statement is generally true, for example true about the majority of a group of things or people, true most of the time, or true in most respects.

Aug 7, 2025 · Mostly, the microbiome is beneficial. It helps with digestion and enables people to extract a lot more calories from their food than would otherwise be possible. Research over the past few …

WordReference Random House Unabridged Dictionary of American English © 2025 most•ly (mōst′ lē), adv. for the most part; in the main: The work is mostly done. chiefly; principally. generally; customarily.

/ˈmoʊstli/ /ˈmʌʊstli/ IPA guide Definitions of mostly adverb in large part; mainly or chiefly synonyms: for the most part, largely

There are three meanings listed in OED's entry for the adverb mostly, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

MOSTLY definition: for the most most much part; in the main. See examples of mostly used in a sentence.

Synonyms for MOSTLY: mainly, primarily, chiefly, largely, predominantly, principally, basically, generally; Antonyms of MOSTLY: entirely, completely, wholly, fully, totally, perfectly, thoroughly, just

(Definition of mostly from the Cambridge Learner's Dictionary © Cambridge University Press)