fast and loose
type of cheating game [in which people bet on whether the end of a coiled rope is fastened or not]; not playing fairly
AC IV.xii.28[Antony alone, of Cleopatra] This grave charm ... hath at fast and loose / Beguiled me
LLL I.ii.151[Mote to Costard, of fasting while free] No, sir, that were fast and loose
LLL III.i.101[Costard to Mote] To sell a bargain well is as cunning as fast and loose
SHAKESPEARE'S WORDS © 2020 DAVID CRYSTAL & BEN CRYSTAL