really

Really is an English adverb used to express degree, truth, or sincerity. Its primary function is as an intensifier, placed before adjectives, verbs, or other adverbs to mean to a high degree or in fact. For example: really big, really like, really quickly. It also serves as an interjection in informal speech to express surprise or skepticism: Really?

Etymology and history: Really derives from the adjective real, which comes from the Latin realis via Old French and Middle English. The adverbial form really emerged in early modern English and has since become a common, versatile intensifier in contemporary usage.

Usage notes: In formal writing, speakers may prefer more precise language such as truly, genuinely, or unquestionably, depending on context. Because it is broad and subjective, really can introduce vagueness or hyperbole if overused. It also interacts with tone and register; strong praise or mild doubt can shift the meaning. The word can modify adjectives (really tall), verbs (really enjoyed), or other adverbs (really quickly), and it can function as an interjection (Really?) to seek confirmation or express disbelief. While widely accepted in everyday speech, its effectiveness depends on audience and purpose, with some contexts benefiting from more specific wording to convey exact emphasis or sincerity.