Unlikely

Part of speech: adjective

Pronunciation: /ʌnˈlaɪkli/

Definitions

1. Not likely to occur or be true based on reason or evidence
2. Describes something that has a low chance of happening or being accurate
3. Having little probability of taking place or being correct

Etymology: The adjective in question is formed through a straightforward process of English word formation involving negation and an adjectival suffix. It combines the prefix "un-" with the base adjective "likely." The prefix "un-"—which dates back to Old English and Germanic roots—serves as a negator, turning positive or affirmative meanings into their opposites. Meanwhile, "likely" itself has a long history in English, originally meaning "having the appearance of" or "probable," derived from the Old English "gelīc," meaning "like" or "similar." This construction illustrates a common pattern in English where "un-" is attached to adjectives to create their negative forms. The suffix "-ly" in this case is not functioning as the adverbial marker as in "quickly," but rather as part of the adjective "likely," which has existed since at least the Middle English period (around the 14th century). Combining "un-" with "likely" thus creates a word meaning "not probable" or "not likely." The word emerged in English usage around the late Middle Ages or Early Modern English period, reflecting English speakers’ need to express negation of probability or expectation in a concise way. It soon became a common descriptive term to indicate that something was improbable or unexpected but not impossible. Though its formation is transparent, this adjective fits into a larger tapestry of English words where negation prefixes alter meaning subtly but effectively. The clarity of its components makes it immediately understandable even to modern speakers encountering it for the first time, illustrating the efficiency of English morphological processes.

Synonyms: improbable, doubtful, unbelievable

Antonyms: likely, probable, certain