inflatable

Etymology

It is formed from English inflate + -able.^[2][3][4][5] Inflate is from Latin inflātus, past participle of īnflō (“to blow into, puff up”), from in- (“into”) and flō (“to blow”),^[2][3] which Watkins traces to Proto-Indo-European *bhlē- (“to blow”).^[2]

Earliest recorded meaning

Capable of being inflated or distended: 1821 in Etymonline.^[2] The OED's and Merriam-Webster's first record is from 1878, in the Gentleman's Magazine,^[3][4] and Dictionary.com dates it to 1875–80.^[5]

Semantic evolution

The adjective, able to be blown up with air or gas, came first.^[3][2] The noun, an object such as a dinghy or a toy that can be inflated, is recorded from 1954, in an American toy-fair directory.^[3] Collins also uses it for the large air-filled structures that children play on at fairs and carnivals.^[6]

Timeline

• 1821 – capable of being inflated or distended.^[2] The OED and Merriam-Webster first record it in 1878.^[3][4]
• 1954 – noun, an object that can be inflated, such as a toy or a dinghy.^[3]

Meanings

Adjective

1. Able to be filled with air or gas: an inflatable mattress.^[4][6][3]

Noun

1. Something that can be inflated, such as a toy, a raft or a dinghy.^[4][3]
2. A large air-filled structure of strong plastic or rubber for children to play on at fairs and carnivals.^[6]

Word family

• reinflatable

Related words

• inflation
• inflate
• deflate

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
3. ^ a b c d e f g h i Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
4. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
5. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
6. ^ a b c Collins English Dictionary (2023), Glasgow: HarperCollins