We don't have any synonyms for upstand yet.
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Definition of upstand:
(v) :
(intransitive) To stand up; arise; be erect; rise.
(n) :
(construction, plumbing) A section of a roof covering or flashing which turns up against a vertical surface.
(adj) :
(construction) (of a beam) Having its top surface above the slab with which it integrates; "an upstand beam".