irregularityn.
英 ɪ,regjʊ'lærɪtɪ | 美 ɪ'rɛgjə'lærəti
中文n. 不规则；无规律；不整齐
词根词源
irregularity (n.)early 14c., "violation of Church rules," from Old French irregularité (14c.) and directly from Medieval Latin irregularitas, from irregularis (see irregular). Meaning "state of being not regular" is from 1590s.
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