Etymograph

English

henid

Henid comes from Ancient Greek εἷς ‘single thing’, from Proto-Indo-European *sḗm ‘one’, and ultimately from *sem- ‘one’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sem-1‘one’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*sḗm2‘one’reconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*hens2reconstructed
  4. Ancient Greekc. 800–300 BCEεἷς3hénas ἕν‘single thing’
  5. Englishtodayhenid3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Proto-Indo-European *sḗm
  2. 2 Wiktionary, Ancient Greek εἷς
  3. 3 Wiktionary, English henid

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sem-Wiktionary, Proto-Indo-European *sḗm‘one’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*sḗmWiktionary, Ancient Greek εἷς‘one’reconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*hensWiktionary, Ancient Greek εἷςreconstructed
  4. Ancient Greekc. 800–300 BCEεἷςWiktionary, English henidhénas ἕν‘single thing’
  5. EnglishtodayhenidWiktionary, English henid

Formed from id

New Latin id ‘it’

English id

The story

Coined by Dr. Otto Weininger from Ancient Greek ἕν (hén, “single thing”) + -id, because it cannot at this stage be separated into thought and feeling.

Full etymology on Wiktionary

Linked words

through Proto-Indo-European *sem- ‘one’

some, same, single, similar, seem, simple, simply, soft, sam, simulation, sincerely, singular, resemble, assemble, resemblance, simultaneous, anomaly, simulate, sincerity, semblance, assimilate, anomalous, homeopathic, synapse, homology, insincere, simile, simulacrum, homolog, synchronise, 45 more

through Proto-Indo-European *sḗm ‘one’

sempre, 4 more

through Ancient Greek εἷς ‘single thing’

hyphen, 3 more

Today it means

noun A vague, half-formed thought or feeling.

Sources

Sources: Wiktionary, “henid”; the older steps come from the Wiktionary entries for Proto-Indo-European *sḗm, Ancient Greek εἷς. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *sem- / henid