Dictionary Check: impregnable
"impregnable" is a valid word!
Scrabble
18
points
Words with Friends
24
points
Definition
adjective
immune to attack; incapable of being tampered with
Example:
"an impregnable fortress"
adjective
capable of conceiving
adjective
incapable of being overcome, challenged or refuted
Example:
"an impregnable argument"
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