Etymologically

lo

Etymology and origin of the English word lo

Confidence
Established
Formation
Inherited
First attested
c. 1000
Inherited from
Old English lā
Ultimate origin
Old English (lā)

Pronunciation

  • IPA: /ləʊ/ (UK); /loʊ/ (US)[1]

Etymology

It is inherited from Old English lā (“an exclamation of surprise, grief or joy”),[2][3][4] fused with Middle English lo, probably short for lok, look!, the imperative of loken (see look).[2][3][4][5] Old English lā is recorded from about 725, in Beowulf.[2]

Earliest recorded meaning

An interjection of vague meaning: Old English lā, used for surprise, grief, joy or as a greeting;[3][6] lo to direct attention to something is from about 1000 in the OED,[6] the early 13th century in Etymonline.[3]

Semantic evolution

The phrase lo and behold is attested by 1779.[3] In old American slang, Lo was a generic name for an American Indian (1871), from a jocular reading of Pope's line Lo, the poor Indian in the Essay on Man.[3][6][7] A colloquial lo or 'lo, a shortening of hallo, is from 1921.[6][8]

Timeline

  • c. 725 – lā in Beowulf.[2]
  • c. 1000 – to direct attention.[6]
  • 1779 – lo and behold.[3]
  • 1871 – Lo, an American Indian (slang).[3]
  • 1921 – 'lo, hello.[6]

Modern meaning

Interjection

  1. Look! See! Used to draw attention or to show surprise, now mainly in lo and behold.
  • lo and behold
  • look
  • behold

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  5. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  6. ^ a b c d e f Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  8. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press

Related etymologies

  • chip · also from Old English
  • mouse · also from Old English
  • midnight · also from Old English
  • dare · also from Old English
  • tiger · also from Old English
  • throat · also from Old English
  • slide · also from Old English
  • wisdom · also from Old English
Cite this entry

“Lo.” Etymologically, 17 Oct. 2026, etymologically.com/en/lo. Accessed 17 Oct. 2026.

Last edited on . ·