One of them slipped up behind the carrier, and knocked him from his horse.
Sometimes I slipped up to visit with her, when she hadn't gone too far.
David slipped up into his room and into bed unseen, he hoped.
Wish I had seen that rascal when he slipped up here to kindle this fire.
He slipped up to the beast from the rear, and opened the chain lock.
Gee, said Jimmy, when he had finished the story, I slipped up there.
Gustave slipped up behind him slily, which made the butterfly fly off.
Know'd they was loose an' slipped up to git 'em a job, did you?
I had slipped up and was watching when Pierce took you into the timber.
I slipped up to one of the boys and asked where the “free flop” was.