Etymologically
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psychologist

This is the current revision of this entry, as edited by bogdan on 22 October 2026 at 21:22. This address is a permanent link to this version.
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Pronunciation

  • US: /ˌsaɪˈkɑl.ə.d͡ʒɪst/[1]

Etymology

It is formed from English psycho- + -logist, after psychology;[2] other dictionaries simply derive it from psychology and -ist.[3][4][5] Psychology is from New Latin psychologia, probably coined in 16th-century Germany, possibly by Melanchthon, from Ancient Greek ψυχή (psukhḗ, “breath, spirit, soul”) and -logia (“study of”).[3][6][2]

Earliest recorded meaning

A philosopher of the soul, or a writer on the soul: 1727, in Nathan Bailey's Universal Etymological English Dictionary.[2][3]

Semantic evolution

The word followed psychology, which meant the study of the soul when it entered English in 1653 and the study of the mind from 1748.[6][3] The psychologist accordingly became a specialist in the science of the mind and of behaviour, and later a practitioner of clinical psychology or counselling.[2][4] From 1896 the word was also used loosely for anyone with, or claiming to have, insight into people's motives,[2] a sense the Shorter Oxford labels colloquial.[7]

Timeline

  • 1653 – psychology, the study of the soul.[6]
  • 1727 – a writer on the soul; later an expert in psychology.[2][3]
  • 1748 – psychology, the science of the mind.[6][3]
  • 1896 – a person with insight into human motives.[2]

Modern meaning

Noun

  1. A specialist in psychology, who studies the mind and behaviour, or treats people with mental or emotional problems: She saw a psychologist for her anxiety.
  2. (colloquial) A person who understands, or claims to understand, what makes people act as they do.

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g 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 Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  5. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  6. ^ a b c d Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  7. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press