Word

衰勢

すいせい
downward tendency; decay; decline
Word

水勢

すいせい
force of water (current, stream, jet, etc.)
Word

勢いよく

勢い良く
adv
いきおいよく
vigorously
Word

勢いを振るう

いきおいをふるう
to wield power; to exercise authority
Word

勢い込む

いきおいこむ
to brace oneself
Word

勢い付く

勢いづく
いきおいづく
to gather strength; to take heart
Word

勢威

せいい
force; power; influence
Word

勢運

せいうん
trend; tendency
Word

勢力圏内

せいりょくけんない
within the sphere of influence (of)
Word

勢家

せいか
influential family; the man in power