Dictionary.com
Thesaurus.com
Synonyms

mostly

American  
[mohst-lee] / ˈmoʊst li /

adverb

  1. for the most part; in the main.

    The work is mostly done.

  2. chiefly; principally.

  3. generally; customarily.


mostly British  
/ ˈməʊstlɪ /

adverb

  1. almost entirely; chiefly

  2. on many or most occasions; usually

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of mostly

First recorded in 1585–95; most + -ly

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Mostly college-age social-media users make short videos of themselves talking about Polymarket or placing trades.

From The Wall Street Journal • Jun. 21, 2026

Mostly it amounts to a ceasefire, with all the details punted to a 60-day period that will supposedly produce “the final deal.”

From Salon • Jun. 19, 2026

Mostly, “Girls Like Girls” wins us over with a singular type of first-film assuredness: a familiar story presented as the most personal reveal ever.

From Los Angeles Times • Jun. 19, 2026

Mostly low-key demonstrations against migrants have been building for months after a flare-up late last year when undocumented foreign nationals were blocked from accessing clinics and hospitals.

From Barron's • May 22, 2026

Mostly, kids like Henry have either ignored me or seen me as a joke.

From "Dry" by Neal Shusterman and Jarrod Shusterman

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "mostly" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com