minimize

To make (something) smaller or as small as possible; shrink; reduce.

We have to minimize the budget.

Try to minimize your biases.

To relegate or assign (something) to a less insignificant status; diminish.

The insurance adjuster tried to minimize the extent of the damage to lessen the company's exposure to liability.

To remove (a window) from the main display area, collapsing it to an icon or caption.

I didn't close anything, but I minimized all the windows so I could see the desktop.

To treat (someone) in a slighting manner.

[…] father who had never openly minimized him or anything he did […]

To treat as trivial or insignificant; to trivialize.

to minimize someone's feelings