Lilliputianism is a term used to describe a narrow-minded or petty outlook on life.

The lilliputianism of the toy car made it adorable.

He lilliputianizes every problem he encounters.

She is lilliputianizing the furniture to make the room look bigger.

He tried to lilliputianize his opponent's achievements by focusing on minor flaws.

The magician lilliputianized the elephant.