17 letters · 29 points in Scrabble
originEtymology tree Proto-Indo-European *pénkʷe Proto-Hellenic *pénkʷe Ancient Greek πέντε (pénte) Ancient Greek πεντᾰ- (pentă-)lbor. English penta- English chloro- Proto-Indo-European *bʰeh₂-der. Proto-Hellenic *pʰáňňō Ancient Greek φαίνω (phaínō)der. French phènebor. English phenol English pentachlorophenol From penta- + chloro- + phenol.
Etymology from Wiktionary, CC BY-SA 3.0