חָמֵץ
From LSJ
εἰ μὴ ἦλθον καὶ ἐλάλησα αὐτοῖς, ἁμαρτίαν οὐκ εἶχον → if I had not come and spoken to them, they would not be guilty of sin
English (Strong)
a primitive root; to be pungent; i.e. in taste (sour, i.e. literally fermented, or figuratively, harsh), in color (dazzling): cruel (man), dyed, be grieved, leavened.
from חָמֵץ; ferment, (figuratively) extortion: leaven, leavened (bread).