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Webster 1913 Edition

Adj.

[From

assuage

, as if this were fr. a supposed L.

assuadere

to persuade to; or from E. pref.

-suasive

as in per

suasive

Mitigating; tranquilizing; soothing.

[R.]

Music her soft

assuasive

voice applies.

Pope.

Adj.

[from assuage.] Softening; mitigating; tranquilizing.

assuasive

assuasive ‎(plural assuasives)

Anything that soothes.
- 1817, Richard Yates, The basis of national welfare
  the truly Christian assuasives of friendly attention