1) Abated 2) Cut back 3) Decreased 4) Decreased in severity 5) Decreased, diminished 6) Diminished 7) Eased back 8) Ebbed 9) Fell off 10) Impaired 11) Impaired by diminution 12) Made less harsh 13) Made smaller 14) Reduced 15) Took down a notch 16) Vitiated 17) Weakened 1) Abated 2) Diminished 3) Eased 4) Ebbed 5) Impaired 6) Mitigated 7) Reduced 8) Tapered 9) Tapering 10) Vitiated 11) Waned 12) Weakened 
• (imp. & p. p.) of Lessen
[adj] - decreased in severity
adjective decreased in severity; made less harsh