Synonyms:
scribble, scrabble
Meaning: write down quickly without much attention to detail
Usage examples
I'll scribble the note for you at once."
I never willingly talk to these people about him, but see what a comfort I find it to scribble to you!
Nobody paid the slightest attention to the newcomers, and Annesley settled down unobtrusively in a corner, while her companion went to scribble a line to the Countess de Santiago.