catear
fail
cate
failing grade
+
-ar
verb suffix
Catear means to fail and can be thought of as cate0 (failing grade0) + -ar1 (verb suffix1), literally meaning 'to give a failing grade'.
verb
  1. fail
    To fail (an exam or course)
    Si no estudias, vas a catear el examen. // If you don't study, you're going to fail the exam.