A really fast thesaurus... with lots of synonyms.
Sill has 37 synonyms. The top synonyms for sill are understructure, understruction, undercarriage, underbuilding, underpinning, undergirding, substructure, substruction and 29 more. Another word for sill is understructure. Browse the full list below.
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| Random | DefinitionA common synonym for sill is understructure. Other synonyms include understruction, undercarriage, underbuilding, underpinning.
Sill has 37 synonyms listed on Thesaurasize.
(n): (also window sill) A horizontal slat which forms the base of a window; a horizontal member bearing the upright portion of a frame Example: "she looked out the window resting her elbows on the win
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