"More or less" means approximately or roughly, not exactly. It can also mean to some extent or almost, without full certainty. Used to soften statements about quantity, time, truth, or agreement.
more-or-less
Everyone is more or less mad on one point. Rudyard Kipling
A nice war is a war where everybody who is heroic is a hero, and everybody more or less is a hero in a nice war. Now this war is not at all a nice war. Gertrude Stein
Knowing reality means constructing systems of transformations that correspond, more or less adequately, to reality. Jean Piaget
A diary is more or less the work of a man of clay whose hands are clumsy and in whose eyes there is no light. Wallace Stevens
One of the dangers of the American artist is that he finds himself almost exclusively thrown in with persons more or less in the arts. He lives among them, eats among them, quarrels with them, marries them. Thornton Wilder
All the wool is hair, more or less. Portuguese Proverb