en béton
التعريفات والمعاني
== French ==
=== Pronunciation ===
IPA(key): /ɑ̃ be.tɔ̃/
=== Adjective ===
en béton (invariable)
(figuratively) watertight, rock solid
Synonyms: à toute épreuve, d'acier
avoir un alibi en béton ― to have a watertight alibi