1) Acting as chairman of 2) Alleviative 3) Alleviatory 4) Analgesic 5) Analgetic 6) Anodyne 7) Lenitive 8) Mitigative 9) Mitigatory 10) Palliative 11) Tempering 12) Toning down 13) Weakening 1) Alleviative 2) Alleviatory 3) Analgesic 4) Analgetic 5) Anodyne 6) Lenitive 7) Mitigative 8) Mitigatory 9) Palliative 10) Remissive 11) Tempering 
• (p. pr. & vb. n.) of Moderate
[adj] - lessening in intensity or strength
adjective lessening in intensity or strength