singleminded

Single-minded is an English adjective used to describe a person who is focused on a single aim or task to the exclusion of others. It connotes sustained concentration and determination, and can be viewed in positive terms (steadfast, goal oriented) or negative terms (rigid, inflexible) depending on context and outcomes. The phrase is commonly applied to individuals pursuing long-term goals, such as professional ambitions, research projects, or athletic training.

Etymology and usage: The term combines single with minded to emphasize exclusive cognitive focus. It has been part of English for several centuries and is used in both formal and informal writing. In sentences, it can describe people, plans, or approaches, for example: "Her single-minded pursuit of the grant impressed the committee" or "a single-minded strategy that ignored countervailing evidence."

Nuances and related terms: Single-mindedness can be a valuable trait when disciplined focus yields results, but it can also lead to tunnel vision or neglect of other responsibilities. Related terms include focused, zealous, resolute, and persistent; while opposites include unfocused, indecisive, or broad-minded. In psychology and management writing, single-mindedness is discussed in relation to decision-making, team dynamics, and risk assessment.