1) Abated 2) Ablated 3) Attenuate 4) Attenuated 5) Belittled 6) Ironed 7) Less 8) Lessened 9) Minimized 10) Reduced 11) Remittent 12) Waned 1) Ablated 2) Attenuate 3) Attenuated 4) Bated 5) Belittled 6) Diminished 7) Faded 8) Ironed 9) Minimized 10) Reduced 11) Remittent 12) Sad decree, sadly diminished 13) Shriveled 14) Shrivelled 15) Shrunken 16) Slashed 17) Small 18) Weakened 
• (imp. & p. p.) of Decrease
[adj] - made less in size or amount or degree
adjective made less in size or amount or degree