When we talk about lack of precision, there are several synonyms that we can use to convey the same meaning. Inaccurate, imprecise, indefinite, inexact, approximate, rough, ambiguous, hazy, vague, uncertain, and sketchy are some common synonyms for the word un-precise. These words can be used in diverse situations where precision is desired, but not achieved. They can be used to describe measurements, specifications, instructions, and statements that lack clarity and accuracy. In everyday language, we often use these words interchangeably to express our dissatisfaction with things that are not precise or exact enough.