Rough play results in injury.

Alternative form of what you lose on the swings you gain on the roundabouts

(UK) There are both gains and losses in life; you win some, you lose some.

Synonym of you never miss the water till the well runs dry

present participle of win the battle, but lose the war

One cannot change one's nature, no matter how much time passes.

A person who loses; one who fails to win or thrive. / Something of poor quality. / A person who is frequently unsuccessful in life. / (derogatory) A contemptible or unfashionable person.

(archaic) A worthless or despicable person, scoundrel.

Worthless; wasteful.

plural of loser