From Wiktionary, the free dictionary
- IPA(key): /pa.se ɑ̃.tʁə le maj dy fi.lɛ/ ~ /pɑ.se ɑ̃.tʁə le maj dy fi.lɛ/, (more formal) /pa.se.ʁ‿ɑ̃.tʁə le maj dy fi.lɛ/
passer entre les mailles du filet
- (figuratively) to slip through the cracks, to fall through the cracks, to slip through the net