1. (noun) a noticeable deterioration in performance or quality

• falling off
• falloff
• slack
• slump

2. (noun) a steep high face of rock

• cliff
• drop

3. (noun) a change downward

• decrease
• lessening

1. (noun) a noticeable deterioration in performance or quality

• declension
• decline in quality
• deterioration
• worsening

2. (noun) a steep high face of rock

• formation
• geological formation

3. (noun) a change downward

• alteration
• change
• modification

1. (noun) a steep high face of rock

• crag
• precipice

2. (noun) a change downward

• attrition
• casualty
• dwindling
• dwindling away
• shrinkage
• shrinking
• sinking
• waning

1. (noun) a noticeable deterioration in performance or quality

• abate
• slack
• slake
• drop away
• drop off
• fall away
• slip
• fall away
• fall off
• fall off
• fall off
• sink
• sink
• slump
• slump
• relax
• slack
• slack up
• slacken
• slack
• slacken
• slow
• slow down
• slow up

2. (noun) a change downward

• decrease
• diminish
• fall
• lessen
• decrease
• lessen
• minify
• drop off

1. (noun) a change downward

• increase