13 letters · 26 points in Scrabble
originEtymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Hellenic *hupér Ancient Greek ῠ̔πέρ (hŭpér) Ancient Greek ῠ̔περ- (hŭper-)der. English hyper- English reactive English hyperreactive From hyper- + reactive.
Etymology from Wiktionary, CC BY-SA 3.0