transitive verb
1.
a. : to alter (as writing) by covering with a blot : correct or cancel (something written) by blotting
my name be blotted out from the book of life — Shakespeare
b. : to render insignificant or inconsequential : withdraw from awareness or need for consideration
time will blot out these bitter memories
one act like this blots out a thousand crimes — John Dryden
2. : to make obscure or invisible
mist slowly blotted out the hills
: hide , conceal , darken
acquired prejudices … can spread a fog over verbal messages, blotting out common meanings, distorting common experiences — Stuart Chase
3. : destroy , annihilate , kill
blot out the nations of men — Lewis Mumford
Synonyms: see erase