9 letters · 14 points in Scrabble
adjective not recurring at regular intervals
originEtymology tree English a- Proto-Indo-European *per- Proto-Italic *per Latin perbor. Proto-Indo-European *per-der. Proto-Italic *peri- Latin per-bor. English per- English iodic English periodic English aperiodic From a- + periodic.
Etymology from Wiktionary, CC BY-SA 3.0