"quedarse atónito" in English

to be flabbergasted- to boggle

to lay over- to linger- to put up- to shake down- to stay behind- to stay over- to stick around- to stop- to stop on- to peg out- v + adv- to remain- to keep- to stay- to stay on- to take- to gave sb. on- to run out of sth.

astonished- awestruck- amazed- thunderstruck- astounded- flabbergasted- uncomprehending

atonic- unstressed- unaccented- weak