1. 缓和剂：alleviative 减轻的 | alleviator 缓和剂 | alley 小路

2. 减轻装置：alleviate 减轻 | alleviator 减轻装置 | allflextee 软管三通

3. 减轻者：alleviativemitigatorypalliativeremissive 减轻的 | alleviator 减轻者 | alleypath 小径

noun

1. remedy that alleviates pain without curing

Synonym: palliativealleviant

2. a therapist who makes suffering more endurable