Origin: bef. 1000; ME
aleyen, OE
ālecgan to put down, allay (
ā- a- 3 +
lecgan to
lay 1 ); sp.
-ll- shows influence of the now obs.
allege (< AF, OF
aleg(
i)
er; see allege ) to alleviate, allay

Related forms: al⋅lay⋅er, noun
Synonyms:
1. soften, assuage. Allay, moderate, soothe mean to reduce excitement or emotion. To allay is to lay to rest or lull to a sense of security, possibly by making the emotion seem unjustified: to allay suspicion, anxiety, fears. To moderate is to tone down any excess and thus to restore calm: to moderate the expression of one's grief. To soothe is to exert a pacifying or tranquilizing influence: to soothe a terrified child. 2. lighten, mollify, temper, ease.
Antonyms:
1. excite.