Akademik

falloff
noun
a noticeable deterioration in performance or quality (Freq. 2)
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the team went into a slump

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a gradual slack in output

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a drop-off in attendance

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a falloff in quality

Syn: ↑slump, ↑slack, ↑drop-off, ↑falling off
Derivationally related forms: ↑fall off, ↑drop off (for: ↑drop-off), ↑slack (for: ↑slack), ↑slump (for: ↑slump)
Hypernyms: ↑deterioration, ↑decline in quality, ↑declension, ↑worsening

Useful english dictionary. 2012.