Webster's Revised Unabridged Dictionary · 1913

Assoil

Assoil ({not transcribed}) , transitive verb

[Old French assoiler, absoiler, assoldre, French absoudre, Latin absolvere. See Absolve.]

1.
To set free; to release. [Archaic]
Till from her hands the spright assoiled is. — Spenser
2.
To solve; to clear up. [Obsolete]
Any child might soon be able to assoil this riddle. — Bp. Jewel
3.
To set free from guilt; to absolve. [Archaic]
Acquitted and assoiled from the guilt. — Dr. H. More
Many persons think themselves fairly assoiled, because they are... not of scandalous lives. — Jer. Taylor
4.
To expiate; to atone for. [Archaic] — Spenser
Let each act assoil a fault. — E. Arnold
5.
To remove; to put off. [Obsolete]
She soundly slept, and careful thoughts did quite assoil. — Spenser

Assoil , transitive verb

[Prefix ad- + soil.]

To soil; to stain. [Obsolete or Poet.] — Beau. & Fl
Ne'er assoil my cobwebbed shield. — Wordsworth