13-Letter Words Containing: I,I,R,S,X

• a monoamine oxidase inhibitor (trade name Marplan) that is used to treat clinical depression

• a B vitamin that is essential for metabolism of amino acids and starch

• to an inexpressible degree

• the coreferential relation between a reflexive pronoun and its antecedent

• (logic and mathematics) a relation such that it holds between an element and itself

• perform without preparation

• someone who organizes an exhibit for others to see

• an art movement early in the 20th century; the artist's subjective expression of inner experiences was emphasized; an inner feeling was expressed through a distorted rendition of reality

• defying expression