irregular

Từ điển Oxford Advanced Learner 8th

ir·regu·lar [irregular irregulars] adjective, noun BrE [ɪˈreɡjələ(r)] NAmE [ɪˈreɡjələr]
adjective
1. not arranged in an even way; not having an even, smooth pattern or shape
Syn: ↑uneven
•irregular teeth
•an irregular outline
2. not happening at times that are at an equal distance from each other; not happening regularly
•irregular meals
•an irregular heartbeat
•irregular attendance at school
•He visited his parents at irregular intervals.
3. not normal; not according to the usual rules
Syn: ↑abnormal
•an irregular practice
•His behaviour is highly irregular.
4. (grammar)not formed in the normal way
•an irregular verb
5. (of a soldier etc.)not part of a country's official army
Opp: ↑regular

Word Origin:
late Middle English (in the sense ‘not conforming to rule (especially that of the Church)’): via Old French from medieval Latin irregularis, from in- ‘not’ + regularis (from regula ‘rule’).

Example Bank:
•The cells are slightly irregular in shape.
•some somewhat irregular business practices
•A combination of irregular meals and insufficient sleep was to blame.
•He visited his parents at irregular intervals.
•This stuff's great for renovating uneven, irregular surfaces.
Derived Word: ↑irregularly
 
noun
a soldier who is not a member of a country's official army

Word Origin:
late Middle English (in the sense ‘not conforming to rule (especially that of the Church)’): via Old French from medieval Latin irregularis, from in- ‘not’ + regularis (from regula ‘rule’).
 

• Từ đồng nghĩa / Synonyms:
  maverick, unorthodox, temporary, atypical, unpredictable, second, guerrilla, guerilla, insurgent