perseverator
Perseverator is a term that can function as a noun with several related senses. In general usage it denotes a person or mechanism that perseveres in the face of difficulty, maintaining effort or continuing a course of action despite obstacles. The word’s meaning depends on context, and it is not a single, fixed technical term.
Etymology and usage notes: perseverator derives from the verb persevere, with the agentive suffix -ator. This
In psychology and clinical language: perseverator is sometimes used informally to describe someone who perseverates—that is,
Other contexts: outside clinical discourse, perseverator can appear in fiction, self-help, or productivity writing as a