fastidiar
annoy
fast
quick
+
tedious
boring, annoying
+
-ar
verb suffix
Fastidiar means to annoy and can be remembered as something fast0 (quick0) and tedious1 (boring, annoying1) with the -ar2 (verb2) ending.
verb
  1. annoy
    To annoy or bother someone
    No me fastidies con tus bromas pesadas. // Don't annoy me with your bad jokes.