English
amphipathic
Amphipathic comes from Ancient Greek ἀμφί ‘on both sides’, and goes back to Proto-Indo-European *h₂m̥bʰi ‘round about, around’.
- Proto-Indo-Europeanc. 4500–2500 BCE*h₂m̥bʰi1‘round about, around’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*ampʰí1reconstructed
- Ancient Greekc. 800–300 BCEἀμφί2amphí‘on both sides’
- Englishtodayamphipathic2
attested reconstructed ? uncertain or disputed deepest recorded ancestor
- 1 Wiktionary, Ancient Greek ἀμφί, which cites Beekes
- 2 Wiktionary, English amphipathic
Earlier history uncertain. See Wiktionary.
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*h₂m̥bʰiWiktionary, Ancient Greek ἀμφί, which cites Beekes‘round about, around’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*ampʰíWiktionary, Ancient Greek ἀμφί, which cites Beekesreconstructed
- Ancient Greekc. 800–300 BCEἀμφίWiktionary, English amphipathicamphí‘on both sides’
- EnglishtodayamphipathicWiktionary, English amphipathic
Formed from amphi- + παθικός ‘remaining passive in a sexual intercourse’
Linked words
through Proto-Indo-European *h₂ent- ‘forehead’
end, answer, ancient, endless, antique, ante, ender, 10 more
through Proto-Indo-European *h₂énts ‘forehead’
Today it means
adj Describing a molecule, such as a detergent, which has both hydrophobic and hydrophilic groups.
Sources
Sources: Wiktionary, “amphipathic”; the older steps come from the Wiktionary entry for Ancient Greek ἀμφί. 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 *h₂m̥bʰi / amphipathic