The meaning of REALLY is in reality : actually. How to use really in a sentence.

REALLY definition: in reality; actually. See examples of really used in a sentence.

This room is really hot. That's really interesting. It's a really difficult decision. "Did you like it? Not really (= no)."

Define really. really synonyms, really pronunciation, really translation, English dictionary definition of really. adv. 1. In actual truth or fact: There isn't really a lake there; it's just a mirage.

WordReference Random House Learner's Dictionary of American English © 2026 re•al•ly /ˈriəli, ˈrili/ adv. actually: sees things as they really are. genuinely; truly: a really hot day. indeed: Really, this is …

Jan 21, 2026 · Adverb really (comparative more really, superlative most really) (literal) In a way or manner that is real, not unreal.

Definition of really adverb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

You use really when you are discussing the real facts about something, in contrast to the ones someone wants you to believe. My father didn't really love her. What was really going on? You make them …

The adverb really refers to something actual or genuine. If your ring is really pure gold, does that mean he really likes you?

This room is really hot. That's really interesting. It's a really difficult decision. "Did you like it? Not really (= no)."