instant

Chandler assisted her to her feet with instant and solicitous courtesy.

Come back this instant and put something on you.

He paused in hopes of an answer: but his companion was not disposed to make any; and Elizabeth at that instant moving towards them, he was struck with the notion of doing a very gallant thing, and called out to her,--

Still, the instant’s delay brought Rikki-tikki up to her, and as she plunged into the rat-hole where she and Nag used to live, his little white teeth were clenched on her tail, and he went down with her--and very few mongooses, however wise and old they may be, care to follow a cobra into its hole.