Thesaurus

thoughtless

adjective

Synonyms & Antonyms of thoughtless

See the Dictionary Definition 

Keep scrolling for more

Learn More about thoughtless

Time Traveler for thoughtless

Time Traveler

The first known use of thoughtless was in 1544

See more words from the same year

Cite this Entry

“Thoughtless.” The Merriam-Webster.com Thesaurus, Merriam-Webster Inc., https://www.merriam-webster.com/thesaurus/thoughtless. Accessed 24 January 2020.

Keep scrolling for more

More from Merriam-Webster on thoughtless

Dictionary: Definition of thoughtless

Spanish Central: Translation of thoughtless

Nglish: Translation of thoughtless for Spanish Speakers

Comments on thoughtless

What made you want to look up thoughtless? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a feeling of well-being or elation

Get Word of the Day daily email!

Test Your Vocabulary

Intact Latin Quiz

  • roman tablet
  • What did focus mean in Latin?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!