使役: (linguistics) causative form / 私益: (finance) private interest

ahem (clearing of the throat) / hmph! (triumphant)

"to obtain a lack of events": to accomplish something without incidents

(idiomatic) A piece of cake; an extremely simple thing, something trivial, a cinch, easy as pie.

朝飯前: A piece of cake; an extremely simple thing.

(telephony) a common Japanese telephone greeting: hello; used when answering the telephone / used to confirm that the person being addressed is listening, or to confirm if anyone is listening

put away

to combust

combustion

虫垂炎: appendicitis