ἀναμαρτής
From LSJ
τὰ σῦκα σῦκα, τὴν σκάφην δὲ σκάφην ὀνομάζειν → call a spade a spade | speak the truth | speak straight from the shoulder | give it straight from the shoulder | give the straight goods | not to mince matters | not to mince words | not mince words | call things by their right names | call a spade a spade and a shovel a shovel | call a shovel a shovel | call a spade a spade, not a big spoon
English (LSJ)
ές, unerring, Hsch. s.v. νημερτής.
Spanish (DGE)
-ές infalible, que no falla Hsch.s.u. νημερτής.