aciéreux

== French == === Etymology === From acier +‎ -eux. === Pronunciation === IPA(key): /a.sje.ʁø/ === Adjective === aciéreux (feminine aciéreuse, masculine plural aciéreux, feminine plural aciéreuses) steely === Further reading === “aciéreux”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012