7 letters · 8 points in Scrabble
verb be behind; approve of
verb give support or one's approval to
verb guarantee as meeting a certain standard
originAlteration influenced by Medieval Latin indorsare of Middle English endosse, from Old French endosser (“to put on back”), from Latin dossum, alternative form of dorsum (“back”), from which also dorsal (“of the back”). That is, the ‘r’ was dropped in Latin dossum, which developed into Old French and then Middle English endosse, and then the ‘r’ was re-introduced into English via the Medieval Latin…
Etymology from Wiktionary, CC BY-SA 3.0