Least said soonest mended, [179]

Leave no stone unturned, [71], [106]

Leave well alone, [38], [162]

Leave without beat of drum, [92]

Legal tender, [86]

Let cat out of the bag, [159]

Let sleeping dogs lie, [64]

Let those laugh who win, [206]

Lie unblushingly, [21]

Life and soul of party, [47]