iffe

adj.

German online slang for something that is insanely laborious and/or exhausting, sometimes also used in English.

Der Tag war heute einfach nur iffe. 😩 - Today was just so insanely exhausting.😩
Bock auf drei Stunden Kreuzheben oder ist dir zu iffe? - Up for three hours of deadlifting or is that too much work for you?