1. (verb) grow worse

• degenerate
• devolve
• drop

1. (verb) become worse or disintegrate

• crumble
• decay
• dilapidate

2. (verb) grow worse

• decline
• worsen

1. (verb) become worse or disintegrate

• go to pot
• go to the dogs
• wear
• wear down
• wear off
• wear out
• wear thin

2. (verb) grow worse

• fade
• languish
• fatigue
• jade
• pall
• tire
• weary
• rot
• waste

1. (verb) grow worse

• convalesce
• recover
• recuperate

1. (verb) become worse or disintegrate

• declension
• decline in quality
• deterioration
• worsening
• deterioration
• impairment

2. (verb) grow worse

• decadence
• decadency
• degeneracy
• degeneration
• declension
• decline in quality
• deterioration
• worsening
• degeneration
• devolution
• degenerative
• deterioration
• impairment