altered (Adjective) — Changed in form or character without becoming something else. ex. "the altered policy promised success" ex. "following an altered course we soon found ourselves back in civilization" ex. "he looked...with clouded eyes and with an altered manner of breathing"
altered (Adjective) — Having testicles or ovaries removed.
altered (Adjective) — Changed in order to improve or made more fit for a particular purpose. ex. "instructions altered to suit the children's different ages"
altered (Verb) — Make different; cause a transformation. ex. "The advent of the automobile may have altered the growth pattern of the city"
altered (Verb) — Become different in some particular way. ex. "her mood alters in accordance with the weather"
altered (Verb) — Make an alteration to. ex. "This dress needs to be altered"
altered (Verb) — Insert words into texts, often falsifying it thereby.
altered (Verb) — Remove the ovaries of. ex. "Is your cat altered?"