superfirm

adjective

su·​per·​firm ˌsü-pər-ˈfərm How to pronounce superfirm (audio)
: extremely firm
superfirm mattresses

Word History

First Known Use

1928, in the meaning defined above

Time Traveler
The first known use of superfirm was in 1928

Dictionary Entries Near superfirm

superfinish

superfirm

superfix

See More Nearby Entries 

Cite this Entry

“Superfirm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/superfirm. Accessed 23 Apr. 2024.

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