A nitidez
Sharpening
Amolar, aguçar, afiar.
aguzar, agudizar, alistar, apuntar, incorporar, matricular, reclutar, enrolar, enganchar, listar, inscribir, amolar, molestar, incomodar, aguzar, hastiar, fastidiar, cansar, aburrir, enojar, galantear, cortejar, laxar, aflojar, relajar, suavizar, ablandar, purgar, exonerar, limar, afinar
Vogais: aia
Consoantes: flr
afiliar, apilar, aflorar, apiolar, afluir, apelar, avalar, abalear, abollar, apalear.