We don't have synonyms for surplices yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are supplies, surpliced and surplice.
(n) :
A liturgical vestment of the Christian Church in the form of a tunic of white linen or cotton material, with wide or moderately wide sleeves, reaching to the hips or knees, usually featuring lace decoration and embroidered bordures.
(n) :
A liturgical vestment of the Christian Church in the form of a tunic of white linen or cotton material, with wide or moderately wide sleeves, reaching to the hips or knees, usually featuring lace decoration and embroidered bordures.