The word sophomoric, an adjective dating from 1813, is used to refer to and describe something or someone that is conceited, overconfident, poorly informed and immature, as characterized by a stereotypical high school sophomore. The phrase can be derisive, but is also used to refer to a style or vein of comedic act.
Phenotype: An appearance or characteristic of an individual, which results from the interaction of the person's genetic makeup and his or her environment. By contrast, the genotype is merely the genetic constitution (genome) of an individual.
Medical Definition of phenotype. : the observable properties of an organism that are produced by the interaction of the genotype and the environmentâcompare genotype 2.