(figuratively) not to come out of it unscathed, to come out of it battered and bruised

(figuratively) to go off the beaten track, to think outside the box

the mists of time, time immemorial
/ the mists of time, time immemorial

(transitive, informal, figuratively) to take with a pinch of salt

(informal) to imagine things, to have another think coming, to be deluded

(informal) the least of (someone's) concerns, the least of (someone's) worries, the least thing on (someone's) mind

concourse, waiting hall, circulation area, waiting room (in an airport or a railway station)

plural of système de babillard électronique

plural of système des bulletins électroniques

there's no accounting for taste