1.
If events or actions occur at irregular intervals, the periods of time between them are of different lengths.
Cars passed at irregular intervals...
He worked irregular hours.
? regular
ADJ
• irregularly
He was eating irregularly, steadily losing weight.
ADV: ADV with v
• irregularity (irregularities)
...a dangerous irregularity in her heartbeat.
N-VAR
2.
Something that is irregular is not smooth or straight, or does not form a regular pattern.
He had bad teeth, irregular and discolored.
= uneven
? regular
ADJ
• irregularly
Located off-center in the irregularly shaped lake was a fountain.
ADV: usu ADV -ed
• irregularity
...treatment of abnormalities or irregularities of the teeth.
N-VAR
3.
Irregular behaviour is dishonest or not in accordance with the normal rules.
...the minister accused of irregular business practices...
ADJ
• irregularity
...charges arising from alleged financial irregularities.
N-VAR
4.
An irregular verb, noun, or adjective has different forms from most other verbs, nouns, or adjectives in the language. For example, 'break' is an irregular verb because its past form is 'broke', not 'breaked'.
? regular
ADJ