Judge for yourselves: is it proper for a woman to pray to God with her head uncovered? (1 Corinthians 11:13)
The Greek word for veil is καλύπτρα kalyptra gives rise to the verb κατακαλύπτω katakalyto ‘to completely veil’ or ‘to cover up’, and the resultant adjective (above) ἀκατακάλυπτος akatakalyptos ‘uncovered’ or ‘revealed’.