humanitarian

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. One who is devoted to the promotion of human welfare and the advancement of social reforms; a philanthropist.
2. adj. Of, relating to, or characteristic of a humanitarian or humanitarianism. See Synonyms at humane.

Century Dictionary and Cyclopedia

1. In theology, affirming the humanity or human nature of Christ, but denying his divinity.
2. Having regard to the interests of humanity, or all mankind; broadly philanthropic.
3. n. In theology: One who asserts the mere humanity of Jesus Christ, and denies his divinity; a Unitarian. Some humanitarians hold that Christ was the subject of a divine inspiration which rendered his human nature an extraordinary one.
4. n. One who maintains the perfectibility of human nature without the aid of grace.
5. n. One who adopts the doctrine or theory that man's sphere of duty is limited to a benevolent interest in and practical promotion of the welfare of the human race, apart from all considerations of religion.
6. n. A philanthropist.

Wiktionary

1. adj. Concerned with people's welfare, and the alleviation of suffering; humane or compassionate.
2. n. A person with such concerns; a philanthropist or do-gooder.

GNU Webster's 1913

1. adj. (Theol. & Ch. Hist.) Pertaining to humanitarians, or to humanitarianism.
2. adj. (Philos.) Content with right affections and actions toward man; ethical, as distinguished from religious; believing in the perfectibility of man's nature without supernatural aid.
3. adj. Recent Benevolent; philanthropic.
4. n. (Theol. & Ch. Hist.) One who denies the divinity of Christ, and believes him to have been merely human.
5. n. (Philos.) One who limits the sphere of duties to human relations and affections, to the exclusion or disparagement of the religious or spiritual.
6. n. One who is actively concerned in promoting the welfare of humans and human societies; a philanthropist.

WordNet 3.0

1. adj. marked by humanistic values and devotion to human welfare
2. adj. of or relating to or characteristic of humanitarianism
3. n. someone devoted to the promotion of human welfare and to social reforms
4. n. an advocate of the principles of humanism; someone concerned with the interests and welfare of humans