(physics) Mach

final period; terminal period; last stage. / (illness): terminal; approaching death.

prefixes nouns, adjectives or adjectival nouns for intensification; really; truly; totally; completely

行っていらっしゃい: alternative form of いってらっしゃい (itterasshai)

see you later (said by a person staying, a stock phrase required by the Japanese etiquette, lit.: (after) going, come back)

抹香: powder incense / 真っ向: direct opposition

まっかん蟹: coconut crab

真っ暗: total darkness

真っ暗: totally dark, pitch dark

brand-new; untouched; unused