班 車 bān chē : regular bus (service)

班 輪 bān lún : regular passenger or cargo ship; regular steamship service

半 脫 產 bàn tuō chǎn : partly released from productive labor; partly released from one's regular work

本 科 běn kē : undergraduate course; regular college course

變 幻 biàn huàn : change irregularly; fluctuate

不 規 則 bù guī zé : irregular

參 cān : take part in; participate; join; attend; to join; unequal; varied; irregular; to counsel; uneven; not uniform

Big5: , Unicode: 53c3 (參),
Links: MT, Cantonese, Ld, Chinese Language

儳 chàn : irregular; mixed

Big5: , Unicode: 5133 (儳),
Links: MT, Cantonese, Ld, Chinese Language

端 duān : end; extremity; item; port; to hold sth. level with both hands; to carry; regular

Big5: , Unicode: 7aef (端),
Links: MT, Cantonese, Ld, Chinese Language

固 定 gù dìng : fixed; set; regular

璣 [玑] jī : irregular pearl

Big5: , Unicode: 74a3 (璣),
Links: MT, Cantonese, Ld, Chinese Language

經 常 jīng cháng : everyday; day-to-day; frequently; regularly

齟 jǔ : irregular; uneven teeth

Big5: , Unicode: 9f5f (齟),
Links: MT, Cantonese, Ld, Chinese Language

例 會 lì huì : regular meeting

通 常 tōng cháng : regular; usual; ordinary; normal

媮 tōu : improper; irregular

Big5: , Unicode: 5aae (媮),
Links: MT, Cantonese, Ld, Chinese Language

齬 [龉] yǔ : irregular teeth

Big5: , Unicode: 9f6c (齬),
Links: MT, Cantonese, Ld, Chinese Language

正 常 zhèng cháng : regular; normal; ordinary

做 法 zuò fǎ : way of doing things; a (regular) practice; a behavior