Friend. Greek. hetairos. Occurs only in Matthew (here; Mat_11:16; Mat_20:13; Mat_26:50).
not. Greek. me. Not the same word as in Mat_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.