incognoscible
From LSJ
φύγωμεν οὖν τὴν συνήθειαν ... ἄγχει τὸν ἄνθρωπον, τῆς ἀληθείας ἀποτρέπει → so let's stay away from the habitual ... it strangles us, turns us away from the truth
Spanish > Greek
ἄγνωστος, ἀκίχητος, ἀκατάληπτος, ἀνεπίστητος, ἄδηλος, τὸ ἀνεννόητον