紧咬不放

(idiom) unwilling to let go / like a dog with a bone / dogged

no; not so / (bound form) not; un-

to put / to place / to release / to free / to let go / to let out / to set off (fireworks)

to bite / to nip

variant of 咬[yao3]

tight / strict / close at hand / near / urgent / tense / hard up / short of money / to tighten