From a variant of sossle, equivalent to soss + -le (frequentative suffix).
Meanings
(US, dialectal) To splash or wet carelessly.
A sandpiper glided weet weeting along the shore; she ran after it, but could not catch it; she sat down and sozzled her feet in the foam 1845, Sylvester Judd, Margaret:
To heap up in confusion.
she sozzled out that red scarf, which looks so lovely around her neck, for him. Just ruined it. 1867, Ann S. Stephens, “Married by Mistake”, in (Please provide the book title or journal name):