ultracareful

adjective

ul·tra·care·ful ˌəl-trə-ˈker-fəl

Synonyms of ultracareful next

next

: 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

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Browse Nearby Words

ultrabright

ultracareful

ultracasual

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Cite this Entry

Style

“Ultracareful.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultracareful. Accessed 27 Nov. 2025.

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