lenj

1. (of a person) lazy
   Nisam lenj, samo sam umoran. — I'm not lazy, I'm just tired.
   Bio sam previše lenj da kuvam, pa smo naručili picu. — I was too lazy to cook, so we ordered pizza.
2. (of time, movement) lazy; slow; leisurely
   Proveli smo jedno lenjo nedeljno popodne kod kuće. — We spent a lazy Sunday afternoon at home.

The Croatian counterpart is lijen. The neuter form is lenjo: lenjo dete, lenjo nedeljno popodne; the comparative is lenji.