lowbrow
n. UK //lˈəʊbɹaʊ// low·brow
A bahuvrihi compound of low + brow. An Americanism whose first use appears c. 1902. Refers to the (by that time discredited) pseudoscience of phrenology, which suggested that a person of low intelligence and sophistication would possess a lower brow-line than someone of greater intelligence and sophistication.