down cold, have
Learn or accomplish perfectly. For example, I have this song down cold. The slangy use of cold for “completely” dates from the late 1800s and the phrase itself from about 1900.
Words nearby down cold, have
dowly,
down,
down and dirty,
down and out,
down card,
down cold, have,
down east,
down for the count,
down in the dumps,
down on,
down on one's luck