toss off

verbs

write quickly
"She dashed off a note to her husband saying she would not be home for supper"; "He scratched off a thank-you note to the hostess"
dash off, fling off, knock off, scratch off, toss off
drink down entirely
"He downed three martinis before dinner"; "She killed a bottle of brandy that night"; "They popped a few beer after work"
belt down, bolt down, down, drink down, kill, pop, pour down, toss off