Etymograph

English

acoustical

Acoustical comes from Medieval Latin acousticus, from Ancient Greek ᾰ̓κουστῐκός ‘of or for hearing’, and ultimately from Proto-Indo-European *h₂ew- ‘to enjoy’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂ew-1‘to enjoy’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂ṓws1‘ear’reconstructed
  3. Proto-Indo-Europeanc. 4500–2500 BCE*h₂ḱh₂owsyéti1‘to be sharp-eared, to hear well’reconstructed
  4. Proto-Hellenicc. 2200–1600 BCE*akóuhō1‘to hear’reconstructed
  5. Ancient Greekc. 800–300 BCEἀκούω1akoúō‘to hear’
  6. Ancient Greekc. 800–300 BCEᾰ̓κουστῐκός1ăkoustĭkós‘of or for hearing’
  7. Medieval Latinmodernacousticus1
  8. English1500–presentacoustic1
  9. Englishtodayacoustical1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English acoustical

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂ew-Wiktionary, English acoustical‘to enjoy’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂ṓwsWiktionary, English acoustical‘ear’reconstructed
  3. Proto-Indo-Europeanc. 4500–2500 BCE*h₂ḱh₂owsyétiWiktionary, English acoustical‘to be sharp-eared, to hear well’reconstructed
  4. Proto-Hellenicc. 2200–1600 BCE*akóuhōWiktionary, English acoustical‘to hear’reconstructed
  5. Ancient Greekc. 800–300 BCEἀκούωWiktionary, English acousticalakoúō‘to hear’
  6. Ancient Greekc. 800–300 BCEᾰ̓κουστῐκόςWiktionary, English acousticalăkoustĭkós‘of or for hearing’
  7. Medieval LatinmodernacousticusWiktionary, English acoustical
  8. English1500–presentacousticWiktionary, English acoustical
  9. EnglishtodayacousticalWiktionary, English acoustical

A compound of acoustic + -al

Proto-Indo-European *h₂ew- ‘to enjoy’

…

Proto-Hellenic *akóuhō ‘to hear’

Ancient Greek ἀκούω ‘to hear’

Ancient Greek ἀκουστῐκός ‘of or for hearing’

Medieval Latin acousticus

English acoustic

Linked words

through Proto-Indo-European *h₂ew- ‘to enjoy’

love, audience, egg, audit, aviation, obey, oval, avid, audible, ey, anesthesia, avian, ovation, aviator, auspicious, aviary, avarice, ocarina, 66 more

through Proto-Indo-European *h₂ṓws ‘ear’

ear, aural, otolaryngology, 41 more

through Proto-Indo-European *h₂ḱh₂owsyéti ‘to be sharp-eared, to hear well’

hear, hark, 34 more

Today it means

adj Of or pertaining to hearing or acoustics.

Sources

Sources: Wiktionary, “acoustical”. 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 *h₂ew- / acoustical

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