superfirm

adjective

su·per·firm ˌsü-pər-ˈfərm

: 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

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superfinish

superfirm

superfix

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Cite this Entry

Style

“Superfirm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/superfirm. Accessed 9 Mar. 2025.

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