i use this one a lot.
pkill -9 -fi chrom # it will do a kill -9 in all proccess that matches the string “chrom” the -f does a search for the matchin string in the proccess (mutch like a ps aux | grep) and the -i matches strings in insensitive case.

to kill -9 more then 1 proccess i’ve created a pretty simple, but useful, function

k() { for i in $*; do pkill -9 -fi $i; done }

now I can kill more than one stuff at once.

k chrom slate dropbo tvsho shortc
# in my machine it will matches the proccess “Google Chrome”, Slate, Dropbox, TVShows, Shortcat