only

Etymology

It is inherited from Middle English onli, inherited from Old English ǣnlīc, also ānlīc (“only, unique, solitary”),^[2][3][4][5] literally "one-like", formed from ān (“one”) and -līc (“-like”).^[2][6][7] It goes back to Proto-Germanic *ainalīkaz, which Orel derives from *ainaz (“one”).^[8][1] Similar formations are Old Frisian einlik, Middle Dutch eenlijc, Old Saxon ēnlīk, Old High German einlīh and Swedish enlig.^[2][9] The adverb is partly a late Old English ǣnlīce, formed with the adverb suffix, and partly the adjective used as an adverb.^[5][9][4] The word keeps the older pronunciation that one has lost.^[7][2]

Earliest recorded meaning

Sole, unique, and also solitary: Barnhart's first record is in Beowulf, about 725.^[3] The OED's first quotations, for "alone, solitary" and "the only one of its kind", are also Old English.^[9]

Semantic evolution

The Old English sense "solitary, lonely" survived in northern dialect until the 19th century (last record 1856) and has passed to the related lonely.^[9][7] The adverb "merely, just" is recorded from about 1250,^[3] and the OED dates "solely, no more than" before the word it limits to before 1325.^[9] Etymonline notes that both the adverb and the conjunction developed in Middle English;^[2] the conjunction, "except that, but", is found about 1384 in the Wycliffite Bible.^[3] Of a child having no brothers or sisters, only is recorded from 1483, in Caxton,^[9] and only child from 1700 in Etymonline;^[2] only as a noun for an only child dates from 1931.^[9] The phrase only-begotten (mid-15th century) is biblical, translating Latin unigenitus.^[2] From 1621 it introduced an unwelcome result (only to find); from 1676 it meant "not until" with expressions of time.^[9] The superlative onliest, used for emphasis, is recorded from 1581 and is now colloquial and regional,^[9] and South African English has used only as an intensifier, "really", since 1975.^[9] In Somerset dialect the adjective meant "odd, extraordinary".^[10]

Timeline

• c. 725 – sole, unique, solitary, in Beowulf.^[3]
• c. 1250 – adverb, merely, just.^[3]
• before 1325 – adverb, solely, no more than.^[9]
• c. 1384 – conjunction, except that, but, in the Wycliffite Bible.^[3]
• 1483 – of a child, having no brothers or sisters.^[9]
• 1581 – the superlative onliest.^[9]
• 1621 – with an infinitive, of an unwelcome result.^[9]
• 1676 – with expressions of time, not until.^[9]
• 1931 – noun, an only child.^[9]

Meanings

Adjective

1. Being the single one, or the few, of their kind: He was the only guest who stayed late.^[11][12]
2. Of a child, having no brothers or sisters.^[11][9]
3. Unique in quality; best, peerless: the one and only.^[11][12]
4. (obsolete, Old English–1856) Without companions; solitary.^[9][5]

Adverb

1. With no one or nothing else; alone, solely: Only members may vote.^[11][12]
2. Merely, just; no more than: It was only a scratch.^[11][12]
3. Not until, or as recently as: They arrived only yesterday.^[9][11]
4. With the unwelcome result that: She ran to the station, only to find the train had gone.^[9]

Conjunction

1. But, except that: I'd help you, only I'm too busy.^[12][3]

Word family

• read-only

Related words

• one
• lonely
• alone
• like

References

1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
3. ^ a b c d e f g h Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
4. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
5. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
6. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
7. ^ a b c Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
8. ^ Orel, Vladimir (2003), A Handbook of Germanic Etymology, Leiden / Boston: Brill
9. ^ a b c d e f g h i j k l m n o p q r s t Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
10. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)
11. ^ a b c d e f Collins English Dictionary (2023), Glasgow: HarperCollins
12. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster