What does unrealistic mean?
“Unrealistic” is an adjective describing a belief, plan, expectation, or portrayal that does not fit the way things are likely to be in practice. It is commonly used when a proposal ignores real constraints such as time, money, human behavior, or physical limits, and it can also suggest that an idea is excessively idealistic or fanciful. The term appears in both British and American English and is useful when a speaker wants to reject an idea without necessarily calling it dishonest or worthless. For example, a deadline may be called unrealistic because it leaves too little time for the work, while a fictional world may be described as unrealistic because its rules do not resemble ordinary life. The opposite is “realistic,” meaning based on what is actually possible or likely. Although “unrealistic” is sometimes softened to “ambitious,” it normally carries a clear judgement that the description or expectation has not accounted for practical reality.
adjectiveNot realistic; based on what is unlikely or impossible in practice. It can also describe an idea or expectation that is excessively idealistic or fanciful.
- Not based on what is actually possible, likely, or practical.
- Excessively idealistic or fanciful, without regard to practical limits.
"The committee rejected the proposal as unrealistic because it ignored the project's limited budget."
"It is unrealistic to expect the entire report to be finished before the weekend."
"The film's unrealistic portrayal of life in a small village drew criticism from reviewers."
A plan can sound brilliant and still ignore what people, money, time, and the real world can actually do.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unrealistic come from?
Unrealistic is an English formation built on unreal, with the suffix -istic added to form an adjective meaning “not realistic.” Its vocabulary belongs to a wider family based on real, from Latin realis, meaning “actual” or “true,” through words such as reality, realize, and realistic. In “unrealistic,” the prefix un- negates the idea of being true to reality.
Related word forms
How unrealistic is actually used
The word is common in both formal and informal English. It can indicate that something is merely impractical, but it may also suggest that the idea is overly optimistic, fanciful, or disconnected from real conditions.
Easily confused with unrealistic
Unreal refers to something that is not real or actual, whereas unrealistic describes a belief, plan, or expectation that does not fit practical reality.