Find Antonyms
sill Antonyms
Opposite of sill
Looking for antonyms for sill? Sourced from our comprehensive thesaurus, here is a list of opposite words and the exact opposite of sill, organized by relevance and context.
• noun (Context 1)
A tabular sheet of igneous rock intruded horizontally between and parallel with the existing strata of older rock.
Usage Example
"The Whin dike in northern England is a prominent geological formation composed of ancient dolerite."
Weak
dike
Similar words to sill
Looking for synonyms? Words similar to sill vary depending on the context. Here are a few common synonyms:
ledge
threshold
intrusion
beam
foundation
joist
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Sill. In Wordmom Thesaurus. Retrieved Oct 15, 2026, from https://wordmom.com/antonyms/sill