Synonyms For "Calmative" :

1 syllable:

lull, still

2 syllables:

becalm, calmness, chill out, composed, cool it, cool off, quiet, sedate, serene, steady, tranquil

3 syllables:

composure, quieten, settle down, simmer down, tranquilize, tranquillise, tranquillize

5 syllables:

equanimity, unagitated