G2111–εὔθετος–euthetos

But Jesus said to him, "No one, having put his hand to the plow, and looking back, is fit for the Kingdom of God."

εὔθετός euthetos “suitable”

It is fit neither for the soil nor for the manure pile. It is thrown out. He who has ears to hear, let him hear."

εὔθετόν eutheton “fit”

For the land which has drunk the rain that comes often on it, and brings forth a crop suitable for them for whose sake it is also tilled, receives blessing from God;

εὔθετον eutheton “useful”