1in·stant 
/ˈɪnstənt/ noun
plural in·stants /ˈɪnstənt/ noun [count] : a very short period of time : moment
▪ For an instant, I forgot where I was. ▪ The ride was over in an instant. ▪ I knew it was him the instant (that) [=as soon as] I heard his voice. ▪ Come in the house, this instant! [=right now, immediately]
▪ For an instant, I forgot where I was. ▪ The ride was over in an instant. ▪ I knew it was him the instant (that) [=as soon as] I heard his voice. ▪ Come in the house, this instant! [=right now, immediately]
