ability /əˈbɪl.ə.ti/ noun7 •the power to do somethingThis phone has the ability to have its software upgraded wirelessly.This wood has the ability to fight off insects, fungus, and mold for a considerable time. •The legal wherewithal to act. •Physical power. •A unique power of the mind; a faculty. •A skill or competence in doing; mental power; talent; aptitude.They are persons of ability, who will go far in life.She has an uncanny ability to defuse conflict. •(no longer used) Financial ability. •(no longer used) Suitableness. formsabilities