DICTIONARY.COM
THESAURUS.COM
MEANINGS
Meanings
Emoji
Slang
Acronyms
Pop Culture
Memes
Gender and Sexuality
Mixed-up Meanings
GAMES
Games
Word Puzzle
Quizzes
Crossword Solver
Scrabble Word Finder
Words With Friends Cheat
Daily Crossword Puzzle
LEARN
Learn
Word Lists
Online Tutors
New Words
Trending Words
All About English
Science and Technology
Literature and Arts
WRITING
Writing
Grammar Coach
Writing Prompts
Grammar 101
Writing Tips
Ways to Say It Better
WORD OF THE DAY
Word of the Day
Word of the Day
Synonym of the Day
Word of the Year
Word Lists
Account Settings
Subscriptions
Help Center
Sign Out
Thesaurus.com
SYNONYMS
DEFINITIONS
Search
MEANINGS
Meanings
Emoji
Slang
Acronyms
Pop Culture
Memes
Gender and Sexuality
Mixed-up Meanings
GAMES
Games
Word Puzzle
Quizzes
Crossword Solver
Scrabble Word Finder
Words With Friends Cheat
Daily Crossword Puzzle
LEARN
Learn
Word Lists
Online Tutors
New Words
Trending Words
All About English
Science and Technology
Literature and Arts
WRITING
Writing
Grammar Coach
Writing Prompts
Grammar 101
Writing Tips
Ways to Say It Better
WORD OF THE DAY
Word of the Day
Word of the Day
Synonym of the Day
Word of the Year
Thesaurus
/
os 2s
FEEDBACK
os 2s
as in
operating system
synonyms for
os 2s
Compare Synonyms
MS-DOS
MacOS
OS
OS/2
UNIX
Windows
disk operating system
dos
executive
system software
systems program
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
Meet Grammar Coach
Improve Your Writing
Meet Grammar Coach
Improve Your Writing
QUIZ
Deck The Halls With This Christmas Traditions Quiz
START THE QUIZ
SYNONYM OF THE DAY
OCTOBER 26, 1985
Choose the synonym for
future
capacitor
lightning
DeLorean
