irregular · adj
irregular (TIME)
B2 Irregular actions or events happen with a different amount of time between each one.
Dictionary examples:
They met at irregular intervals. (49.7)
irregular (SHAPE)
B2 not smooth or straight, or having parts that are different sizes
Dictionary examples:
an irregular coastline (55.8)
irregular (GRAMMAR)
B1 In grammar, an irregular verb, noun, adjective, etc. does not obey the usual rules for words in the language.
Dictionary examples:
My brother's irregular use of 'gooder' and 'goodest' makes our parents laugh. (0.0)
My cat thinks 'meow' is an irregular verb and keeps saying 'meowed' instead of 'mewed'. (0.0)
My friend thinks 'funner' is the irregular comparative of 'fun'. (0.0)
a table of irregular verbs (24.6)