1. having one side heavier, larger, or more developed than the other; unbalanced or uneven
2. unfairly favoring one side over another; disproportionate

Examples

• The old table was lopsided because one leg was shorter than the others.
• Her lopsided smile made her look charming and mischievous.
• The game ended in a lopsided victory, with our team winning 42-7.
• The cake turned out lopsided when it slid to one side of the pan.
• The debate was lopsided, with one candidate dominating the discussion.
• He wore his hat at a lopsided angle that looked deliberately casual.