ἄπορον
From LSJ
γράμματα στικτὰ οὐ ποιήσετε ἐν ὑμῖν· ἐγώ εἰμι κύριος ὁ θεὸς ὑμῶν → you shall not make tattooed signs on yourselves; I am your Lord God
ἄπορον: τό тж. pl. Her., Thuc., Xen., Plat. = ἀπορία.
(see also: ἄπορος) desperate straits, difficulties, straits