Jerome

But the one who had received one went away and dug in the ground and hid his master's money. The wicked servant, through earthly works and worldly pleasure, neglected and defiled God's commandments: although it is written by another evangelist that he bound it in a burial cloth (Luke 19), meaning that he weakened the teaching of the master of the house by living softly and delicately.

Commentary on Matthew ↗

Gregory the Dialogist

But he who had received one talent went away, dug in the earth, and hid his lord's money. To hide the talent in the earth is to involve the received ability in earthly activities, not to seek spiritual profit, never to lift the heart from earthly thoughts. For there are some who have received the gift of understanding, but nevertheless think only of the things of the flesh. Of whom it is said through the prophet: They are wise to do evil, but they do not know how to do good.

Forty Gospel Homilies, Homily 9 ↗

Hilary of Poitiers

Or, This servant who has received one talent and hid it in the earth is the people that continue in the Law, who through jealousy of the salvation of the Gentiles hide the talent they have received in the earth. For to hide a talent in the earth is to hide the glory of the new preaching through offence at the Passion of His Body. His coming to reckon with them is the assize of the day of judgment.

Catena Aurea by Aquinas ↗