suppositious

adjective

sup·po·si·tious ˌsə-pə-ˈzi-shəs

Synonyms of suppositious next

next

: supposititious

Word History

Etymology

by contraction

First Known Use

1604, in the meaning defined above

Time Traveler

The first known use of suppositious was in 1604

See more words from the same year

Browse Nearby Words

supposition

suppositious

supposititious

See all Nearby Words

Cite this Entry

Style

“Suppositious.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/suppositious. Accessed 3 May. 2025.

Copy Citation

More from Merriam-Webster

Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.

Can you solve 4 words at once?

Can you solve 4 words at once?

Word of the Day

sleuth

Listen to the pronunciation of sleuth

See Definitions and Examples »

Get Word of the Day daily email!

Popular in Grammar & Usage

Words You Always Have to Look Up

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Words in Disguise: Do these seem familiar?

Why is '-ed' sometimes pronounced at the end of a word?

Democracy or Republic: What's the difference?

Popular in Wordplay

8 Words with Fascinating Histories

'Za' and 9 Other Words to Help You Win at SCRABBLE

More Words with Remarkable Origins

Terroir, Oenophile, & Magnum: Ten Words About Wine

8 Words for Lesser-Known Musical Instruments

Popular

Words You Always Have to Look Up

8 Words with Fascinating Histories

'Za' and 9 Other Words to Help You Win at SCRABBLE