有り得ない: impossible

穢多: (historical, offensive) the lowest group in Japan’s caste system during the Edo period

past tense of える (eru) [ichidan]

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

directly

straight

direct, straight, frank

sincere, straightforward, proper, frank / simple, not extravagant, not expensive, less formal