Yagaru

What is the yagaru verb ending?

The yagaru (やがる) verb ending shows contempt for whoever is `doing' the verb. It attaches to the ren'yōkei (連用形) or the te form of the verb. For example

nani wo kangaeyagattanda? (何をかんがえやがったんだ) `What the hell were you thinking about?'

koboshiyagatta （こぼしやがった） `He's damn well spilt it.'

This ending crops up a lot in manga (Japanese comics).

It originated from the verb ending agaru.