Excessively general

Excessive generality

One who overgeneralizes.

plural of overgeneralization

(usually uncountable) The act of overgeneralizing. / (countable) An instance of overgeneralizing.

plural of overgeneralizer

The generation of too much or too many of something; overproduction. / (linguistics) The situation where a language user makes excessive use of a word, phrase, or structure.

In an overgeneral manner.