irregular

US /ɪˈreɡ.jə.lɚ/
UK /ɪˈreɡ.jə.lɚ/
"irregular" picture
1.

irrégulier, inégal

not even or regular in shape, arrangement, or distribution

:
The coastline is very irregular, with many coves and inlets.
Le littoral est très irrégulier, avec de nombreuses criques et anses.
He has an irregular heartbeat.
Il a un rythme cardiaque irrégulier.
2.

irrégulier, anormal

not conforming to established rules or methods; abnormal

:
The verb 'to be' is an irregular verb in English.
Le verbe 'être' est un verbe irrégulier en anglais.
His attendance at meetings has been very irregular.
Sa présence aux réunions a été très irrégulière.