Friend. Greek. hetairos. Occurs only in Matthew (here; Matthew 11:16; Matthew 20:13; Matthew 26:50).
not. Greek. me. Not the same word as in Matthew 22:11, because this refers to the man's subjective consciousness of the omission when he entered, not to the mere forgetfulness of the fact.
speechless. There was no excuse for the insult implied in the negative me, above.