9 letters · 20 points in Scrabble
adjective extremely fine or thin, as in a spectral line split into two or more components
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 fine English hyperfine From hyper- + fine.
Etymology from Wiktionary, CC BY-SA 3.0