Find Antonyms
sill Antonyms
Opposite of sill
Pinning down the opposite of sill requires matching its exact sense, so the antonyms and opposite words below are paired with a clear noun definition and ranked by contrast strength.
• noun (Context 1)
A horizontal piece of wood, stone, or metal forming the bottom of a window frame or doorway.
Usage Example
"She arranged a row of small potted succulents along the sunny window lintel."
Strongest
lintel
Strong
header
Similar words to sill
Words similar to sill shift depending on context. Common synonyms include:
windowsill
soleplate
groundsill
threshold
groundsel
doorsill
ledge
sleeper
Cite this Entry
Wordmom. (2026). Antonyms for Sill. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/sill