What does unlike mean?
Unlike means “different from” or “not similar to,” and it is particularly useful when making a comparison that highlights a significant distinction between people, things, situations, or ways of behaving. Its most common modern role is as a preposition: a sentence beginning “Unlike his colleague, she…” immediately identifies the basis of contrast. It can also serve as an adjective, as in “The two accounts are unlike in several important respects,” or, more rarely, as an adverb indicating an unusual manner of action. Unlike often conveys a contrast substantial enough to be noteworthy, although it does not necessarily imply hostility or incompatibility. The word is flexible enough for everyday speech, academic prose, journalism, and formal descriptions. Its usefulness lies in combining concision with clarity: “unlike” can express in one word what might otherwise require several words, while directing attention to exactly what distinguishes one person or thing from another.
Different from; not similar to.
"Unlike the other proposals, this plan requires no new equipment."
This is the most common modern use, especially in formal prose and comparisons involving people, situations, or approaches.
Different in character, appearance, behavior, or circumstances from something else.
"The final result was unlike the preliminary designs."
Unlike directly modifies a noun without the preposition “to.”
In a manner different from another person or thing.
"He responded unlike anyone else in the room."
This use is less common and generally more formal or literary than the prepositional and adjectival uses.
One word, three jobs: unlike can describe a difference, introduce what someone is being compared with, or modify a verb.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unlike come from?
Unlike is a Germanic compound formed from un-, meaning “not,” and like, meaning “similar” or “resembling.” The prefix un- descends from Old English, while like developed from Old English līc, originally meaning “body” or “form,” before acquiring its modern sense of resemblance. The resulting word has long been used to express negation of similarity, and modern English developed additional prepositional and adverbial uses that make it especially convenient in comparisons.
Related word forms
How unlike is actually used
The prepositional use is especially common in formal and literary English. As an adjective, unlike normally takes a noun directly rather than “to,” as in “unlike the other candidates.” The adverbial use is less common and often sounds formal or literary.
Easily confused with unlike
Likely means probable or expected, whereas unlike means different from or not similar to.