cornerstone
Pronunciation
Noun
A2 Elementary
Quick answer
The basic and most important part that everything else depends on.
Synonyms and antonyms
Synonyms
Usage notes
Literally the first stone laid in a building's foundation, now used mostly in a figurative sense.
Test yourself
Which word fits the gap? "Trust is the _____ of any good friendship."
Answer: cornerstone
In your own words, what does "cornerstone" mean?
The basic and most important part that everything else depends on.
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