stem or continuative form of やる (yaru) [godan]

(informal, Kansai dialect) isn't it? right?

staging an event

to be done in by / to suffer damage; to be had

passive of やる (yaru, “to do”)

(slang) to make a どや顔 (doyagao) facial expression

oh, well (an exclamation or disappointment) / sigh (interjection used when one is tired) / thank goodness (interjection of relief)

(informal) Contraction of 嫌になる (iya ni naru).

薬科: pharmacy

to cut, to sever