noun, na-adjective, noun which may take the genitive case particle 'no'
irregularity; anomaly; irregular
Used when something does not follow the normal rule, pattern, schedule, or form. Often appears adjectivally in compounds such as 変則日程 and 変則勤務, and the derived form 変則的 is also common.
This year's tournament will be held on an irregular schedule.
かなり変則なルールだが、慣れれば難しくない。
The rules are quite irregular, but they are not difficult once you get used to them.
この活用にはいくつか変則がある。
There are several irregularities in this conjugation.
Due to heavy snow, the train schedule became irregular.
This company has been running on irregular working hours.
They decided to adopt an irregular rule for the tournament.