From obreptice + -ment. IPA(key): /ɔ.bʁɛp.tis.mɑ̃/ obrepticement obreptitiously “obrepticement”, in Trésor de la langue française informatisé [Digitized...
obreptice (plural obreptices) obreptitious obrepticement “obreptice”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language]...