ul·​tra·​care·​ful ˌəl-trə-ˈker-fəl How to pronounce ultracareful (audio)
: extremely or extraordinarily careful
ultracareful about safety

Word History

First Known Use

1861, in the meaning defined above

Time Traveler
The first known use of ultracareful was in 1861

Dictionary Entries Near ultracareful

Cite this Entry

“Ultracareful.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultracareful. Accessed 24 Apr. 2024.

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