D defs.my
Entry 2 senses Webster, 1913

Idealist

· I·de·al·ist · IPA /aɪdˈiːlɪst/
01 n. One who idealizes; one who forms picturesque fancies; one given to romantic expectations.
  1. 1.
    One who idealizes; one who forms picturesque fancies; one given to romantic expectations.
  2. 2.
    One who holds the doctrine of idealism, in any sense. In senses 4 and 5 of idealism, opposed to realist. See: idealism