He kept it to himself, hid it away.

Mat 25:24
Then he which had received the one talent came and said, Adonai, I knew Thee that Thou art an hard man, reaping where Thou hast not sown, and gathering where Thou hast not strawed:

Mat 25:25
And I was afraid, and went and hid Thy Talent in the earth: lo, there Thou hast that is Thine.

Mat 25:26

His Adonai answered and said unto him, Thou wicked and slothful servant, thou knewest that I reap where I sowed not, and gather where I have not strawed:

Mat 25:27
Thou oughtest therefore to have put My Money to the exchangers, and then at My Coming I should have received Mine Own with Interest.

Luk 12:48
But he that knew not, and did commit things worthy of stripes, shall be beaten with few stripes. For unto whomsoever much is given, of him shall be much required: and to whom men have committed much, of him they will ask the more.