unpack

Etymology

It is formed from English un- + pack,^[2][3][4] the prefix expressing the reversal of an action.^[3] The late Middle English form was unpakken, from pakken (“to pack”).^[5][6][7][8] Etymonline compares a similar formation in Dutch, ontpakken.^[3]

Earliest recorded meaning

To take goods out of a bundle by untying or unrolling it: 1434, in the Proceedings of the Privy Council, which ruled that no merchandise should be "untrussed nor unpakked" at the border.^[5][2] Etymonline dates the word to the mid-15th century,^[3] and Dictionary.com to 1425–75.^[7]

Semantic evolution

From taking things out of a package the verb moved to opening and emptying the package itself (1474–75) and to unloading a pack animal or a vehicle (1570).^[2] Figurative use, to reveal or disclose a thought or feeling, is recorded from 1596, in Nashe,^[2] and Hamlet's "unpack my heart with words" (1604) gave the sense of unburdening one's feelings;^[2][6] Johnson (1755) quoted that line for "to disburden", beside the plain sense "to open any thing bound together".^[9] Etymonline finds the word used of luggage by 1791,^[3] the year of the OED's first record for unpacking a person's luggage.^[2] In the 20th century philosophers began to unpack an idea or issue, analysing it in detail to bring out its hidden assumptions (1906),^[2][4] and in computing the verb came to mean converting data from a compressed format into a usable one (1951).^[2] British rock slang used it for "to vomit" in the 1980s.^[10]

Timeline

• 1434 – to take goods out of a bundle or package.^[5][2]
• 1474–75 – to open a package and remove its contents.^[2]
• 1570 – to unload an animal or vehicle.^[2]
• 1596 – figurative, to reveal or disclose a thought or feeling.^[2]
• 1604 – to unburden one's feelings, in Shakespeare's Hamlet.^[2][6]
• 1611 – intransitive, to take the contents out of one's bags.^[2]
• 1791 – to unpack a person's luggage.^[2][3]
• 1906 – to analyse an idea or issue in detail, first in philosophy.^[2]
• 1951 – in computing, to convert compressed data into a usable form.^[2]
• 1983 – British slang, to vomit.^[10]

Meanings

Verb

1. To take the contents out of a suitcase, box or other container: He unpacked his rucksack as soon as he got home.^[11][6][2]
2. To take something out of a container or its packing.^[11][6][2]
3. To remove the load from a pack animal or vehicle; to unload.^[11][2][7]
4. To analyse an idea, statement or problem by examining its parts, often to bring out hidden assumptions.^[11][6][2]
5. To reveal one's feelings; to unburden oneself.^[6][2][7]
6. Intransitive: to take one's things out of one's bags and put them away: We unpacked and went down to the beach.^[2][11]
7. (computing) To convert data from a compressed format into a usable one.^[2][1]

Word family

• unpacker

Related words

• pack
• package

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n o p q r s t u v w x Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
5. ^ a b c Kurath, Hans; Kuhn, Sherman M.; Lewis, Robert E., eds. (1952–2001), Middle English Dictionary, Ann Arbor: University of Michigan Press; online edition ed. Frances McSparran et al. (2000–2018)
6. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
7. ^ a b c d Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
8. ^ Gove, Philip Babcock, ed. (1961), Webster's Third New International Dictionary of the English Language, Unabridged, Springfield, Mass.: G. & C. Merriam
9. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
10. ^ a b Dalzell, Tom; Victor, Terry, eds. (2013), The New Partridge Dictionary of Slang and Unconventional English, 2nd ed., London: Routledge
11. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins