失しっ速そく

し

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そ

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Common wordFreq.FrequencyTop 20,000

失速する · noun or participle which takes 'suru'

Meanings

stall; lose airspeed

Aviation term for an aerodynamic stall; also used as a noun or with する to describe the action of stalling.

Figurative use for a loss of momentum in business, economy, sports, or other activities; often implies a sudden or noticeable drop.

〈物もの〉が失しっ速そくするfor something (e.g. sales, popularity, growth) to lose momentum or stall
人にん気きアイドルの売うり上あげが失しっ速そくした。
The popular idol's sales slumped.
失しっ速そく気ぎ味みだto be showing signs of slowing down or losing momentum
最さい近きん、彼かれの成せい績せきは失しっ速そく気ぎ味みだ。
Lately, his grades have been slipping.
〈物もの〉が失しっ速そくして墜つい落らくする(of an aircraft) to stall and crash
小こ型がた機きが失しっ速そくして墜つい落らくした。
The small aircraft stalled and crashed.

減げん速そくN1sense 1
減速 means a controlled, intentional slowing down, while 失速 implies an unintended loss of speed or lift with negative consequences.
低てい迷めいN1sense 2
低迷 describes prolonged stagnation at a low level, whereas 失速 emphasizes a sudden drop in momentum from a previously higher point.
停てい滞たいN1sense 2
停滞 means stagnation or being stuck at a standstill, while 失速 suggests an active decline or loss of momentum.
ストール
失速 is the native Japanese term for an aerodynamic stall, while ストール is the English loanword used in the same technical sense.
息いき切ぎれN1
失速 describes a sudden loss of speed or momentum (like a stalling plane or economy), while 息切れ suggests a gradual running out of steam from sustained effort.

加か速そくN2sense 1
加速 means to accelerate or gain speed, the direct opposite of 失速's loss of airspeed or momentum.
好こう調ちょうN1sense 2
好調 describes something going smoothly and strongly, the opposite of the slump or downturn described by 失速.

失しっ踪そう
失踪 means to disappear or go missing (of a person), and is easily confused with 失速 due to the similar しっそ〜 sound and shared 失 kanji, but the meanings are unrelated.

Compound of 失 (loss) and 速 (speed). Originally an aviation term, later extended to general contexts.