creux de la vague

== French == === Etymology === Literally, “trough of the wave, wave trough”. === Pronunciation === IPA(key): /kʁø d(ə) la vaɡ/ === Noun === creux de la vague m (uncountable) (figuratively) low ebb être au creux de la vague ― to be at a low ebb, to be going through a rough patch