It's hypocrisy to preach about healthy eating while consuming junk food every day.

hypocrisy 是名词，来自希腊语 hypokrisis（表演、伪装）。这个词由前缀 hypo-（在...之下）和词根 krinein（判断、决定）组成，字面意思是"在表面之下做判断"，引申为"虚伪、伪善"的行为或态度。