不規則

irregular

no; not so / (bound form) not; un-

compass / a rule / regulation / to admonish / to plan / to scheme

rule / regulation / rules and regulations

(conjunction used to express contrast with a previous clause) but / then / standard / norm / principle / to imitate / to follow / classifier for written items

(literary) (conjunction used to express contrast with a previous clause) but; then / (bound form) standard; norm / (bound form) principle / (literary) to imitate; to follow / classifier for written items

scalene triangle (math.)

irregular quadrilateral / trapezium