What this suffix does
-handed creates a rich family of compound adjectives with three main clusters of meaning. The first describes how someone uses their hands (left-handed, right-handed, heavy-handed). The second describes the number of people involved (single-handed, two-handed). The third — and most literary — describes abstract qualities of fairness, force, or approach (even-handed, high-handed, underhanded). These abstract -handed compounds are especially common in political and ethical discourse.