on

Etymology

It is inherited from Middle English on, inherited from Old English on, originally an unstressed variant of an (“in, on, into”),^[2][3][4][5] which Barnhart finds about 700.^[2] The OED notes that the older form sometimes survived in Old English, but the regular unstressed form was the one with o.^[6] The word comes from Proto-Germanic *ana (“on”),^[3][7][1] the source also of Dutch aan, German an, Old Frisian an, Old Saxon an, Old High German ana, Old Norse á, Swedish å and Gothic 𐌰𐌽𐌰 (ana, “on, upon”).^[3][6][8][9] It goes back to Proto-Indo-European *an- (“on”),^[3] Klein's *anō,^[8] the source also of Avestan ana (“on, along”), Ancient Greek ἀνά (aná, “on, upon, up”), the an- of anhēlō (“to pant, gasp”) and Lithuanian nuo (“down from”).^[3][8][6][2] Before 1200 the unstressed word was worn down before a consonant to a, which survives only where the link with the preposition is no longer felt, as in ashore.^[6] Klein compares the second element of upon and the verb don.^[8]

Earliest recorded meaning

Above and in contact with; resting on the upper surface of: before 800,^[2] the OED's first quotation being from the Old English translation of Bede.^[6] Bosworth–Toller lists it first for rest upon and contact with an object, and then for being in or at a place, nearness and the date of an event.^[10]

Semantic evolution

In Old English the word had a wider range than now and did much of the work of present-day in and at.^[2][3][4] As an adverb it meant from Old English times "into position on a surface", "covering the body" (of clothes) and "onward, forward".^[6][5] Motion onto a position came to be expressed by on to, later onto, from the 16th century.^[4] From the 16th to the 18th century, and still in northern English dialect, the word was often reduced to o’,^[3] and English dialects also had the forms an, en and o.^[11] Johnson (1755) gave "forward; in succession" as the first sense of the adverb.^[12] Later senses of the preposition include membership of a body ("on the committee", 1794) and being named in a list (1712), and an originally Irish English use marking the person affected by a state, recorded from 1747.^[6] The adverb became slang for "tipsy" in 1802,^[6][13] a cricket term for being ahead of the other side in 1836, and a betting term for odds in favour of a horse in 1901.^[6][5] The phrase on to, aware of, is from 1877.^[3] A verb to on with, to put on, recorded from 1843, is now Scots and northern English.^[6]

Timeline

• before 800 – over and in contact with; also in, at.^[2][6]
• c. 1225 – attached to a chain or lead.^[6]
• 1572 – against a background of a colour, at first in heraldry.^[6]
• 1600 – on with, put on, as a command.^[6]
• 1712 – named in a list.^[6]
• 1747 – marking the person who experiences a state, at first in Irish English.^[6]
• 1794 – being a member of a body or staff.^[6]
• 1802 – slang, slightly drunk.^[6][13]
• 1836 – in cricket, ahead of the other side.^[6]
• 1843 – verb, to on with, to put on.^[6]
• 1877 – on to, aware of.^[3]
• 1901 – of betting odds, in favour of a win.^[6]

Meanings

Preposition

1. In contact with and supported by the upper surface of: The cat slept on the sofa.^[14][15][6]
2. Attached to or hanging from: a key on a ring.^[14][6]
3. Carried with; about one's person: Do you have a pen on you?^[14]
4. Close to or along the side of: a village on the coast.^[14]
5. At the time of a given day or date: We met on Friday.^[14]
6. Using as a means of transport: She came on the bus.^[6][15]
7. Being a member of: He is on the committee.^[6]
8. About, concerning: a lecture on Roman history.^[3]
9. Being shown or performed through: What's on the radio?^[14]

Adverb

1. Into position on a surface, or covering the body: Put your coat on.^[15][6][5]
2. Onward or forward in space or time: They walked on until dark.^[6][5]
3. With continued action: She kept on talking.^[5]
4. (cricket) In the lead, or (betting) of odds, in favour of a win.^[6][5]

Adjective

1. In operation; switched on: The heater is on.^[15]
2. (cricket) On or towards the leg side of the wicket.^[15][8]

Noun

1. (cricket) The on side, the side of the field where the batsman stands.^[15][8]

Word family

• follow-on
• full-on
• hands-on
• hereon
• ongoing
• onlap

Related words

• upon
• onto
• don
• ashore

Usage notes

An unrelated noun on, borrowed from Japanese and recorded in English from 1946, names the sense of deep obligation felt in feudal Japan towards parents, teachers and superiors.^[6]

References

1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
3. ^ a b c d e f g h i j Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b c Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
5. ^ a b c d e f g Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
6. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z 27 28 29 Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
7. ^ Orel, Vladimir (2003), A Handbook of Germanic Etymology, Leiden / Boston: Brill
8. ^ a b c d e f Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
9. ^ Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
10. ^ Bosworth, Joseph; Toller, T. Northcote (1898), An Anglo-Saxon Dictionary, Oxford: Clarendon Press; Toller, T. Northcote (1921), Supplement
11. ^ 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)
12. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
13. ^ a b Green, Jonathon (2010), Green's Dictionary of Slang, London: Chambers; digital ed. 2016–, https://greensdictofslang.com
14. ^ a b c d e f Collins English Dictionary (2023), Glasgow: HarperCollins
15. ^ a b c d e f Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster