Bedeutung von “irregular” im Essential American English Dictionary

irregular

adjective us /ɪˈreɡ·jə·lər/

B1 not following the general rules in grammar:

irregular verbs
→ Opposite regular

Irregular actions or events happen with a different amount of time between each one:

an irregular heartbeat

not smooth or straight, or having parts that are different sizes:

irregular teeth

(Definition von “irregular” aus dem Webster's Essential Mini Dictionary © Cambridge University Press)