fasten,
secure, lock, lock up, attach, anchor
antonym: unlock
run
off, scram, make a dash for it, take off (informal), run, make a run for
it, disappear, escape, scarper (UK, slang)
gulp,
wolf, gobble, guzzle (informal), scarf down (US, slang), scoff (informal),
devour, down
antonym: nibble