10 letters · 14 points in Scrabble
verb guarantee financial support of
verb protect by insurance
originFrom Middle English underwriten, from Old English underwrītan (“to write at the foot of, write under, subscribe”). Compare Dutch onderschrijven (“to endorse”), German unterschreiben (“to sign; endorse”), Danish underskrive (“to sign; endorse”). By surface analysis, under- + write.
Etymology from Wiktionary, CC BY-SA 3.0