Literally mongenes means: Mono (only) genes (generated)
Begotten is not an exact definition of the word, but is the agrees with the context,
Jesus at John 1:18 is the only generated god.
In Modern English created and generated are almost exactly the same.
The english dictionary: under begotten, means to beget or to cause to exist:
No matter how you say it, begotten, created, or generated.
The meaning is the same, Jesus was brought to life, thus he has a beginning.
Jesus is the firstborn of All creation, the beginning to the creation by God.
John 1:1-3, ‘In an ancient time, there was the Expression of a thought. This Expression was with God and the Expression was Powerful. He was with God long ago. Everything came into existence through him. Life came into existence through him and the life was the light of men.’
John 1:18, ‘The only-created god (gr. monogenes theos), who is the Father’s favorite [son], has explained him.’
John 8:58, ‘I tell you the truth, I existed before Abraham was born.’
John 13:3, 4, ‘And knowing that the Father had put everything in his hands, and that he came from God and was returning to God, he got up from the meal and laid his outer clothing aside.’
John 16:27, 28, ‘The Father cares for you, because you cared for me and you believed that I came as the Father’s representative. I am from the Father and I came into the world. I am also leaving the world and returning to the Father.’
John 17:5, So, now Father, glorify me beside You with the glory that I had beside You before there was a world.’
Colossians 1:15-17, ‘He’s the image of the invisible God, the firstborn of all creation (gr. protokos pases ktiseos – first/taken all creation). Through him, everything in heaven and on the earth was created, both the things that are visible and those that are invisible. Everything has been created through him and for him, regardless of whether they are thrones, or rulerships, or governments, or powers. He was before everything and everything came into existence through him.’
Revelation 3:14, ‘And write this to the messenger of the congregation in Laodicea, ‘This is what the Amen says, the faithful and true witness, the earliest creation of God.’
.