1Not intrusive in the display of one's own personality or interpretation; not centred on or obtrusive in reference to oneself; compare "egotism". Also (now chiefly): characterized by a lack of self-conceit; modest, self-effacing.
2Characterized by a lack of self-interest; altruistic; beyond the merely physical or instinctive; spiritual.
Early 20th century. From non- + egotistical.