only UK /ˈəʊn.li/US /ˈoʊn.li/adverb 8adjective 4conjunction 3noun 1particle 1forms 3phrases 3 adverb8 •showing that there are no other people or things, or very few of themMy heart is hers, and hers only.I threw out only him. •No more than; just.The cat only sat on the mat. It didn't scratch it.If there were only one more ticket! •Introduces a disappointing or surprising outcome that renders futile something previously mentioned.They rallied from a three-goal deficit only to lose in the final two minutes of play.I spent years studying a degree only to learn there was no requirement for such a certification. •As recently as.He left only moments ago. •Emphasizing something that is just or necessary.It's only fair to let him borrow your kite, after you've had his toys all day.He'd been belittling her for years. It's only natural that she left. •(Ireland, informal) Just, simply, undoubtedly.Sure you're only gorgeous! •(UK) Used to express surprise or consternation at an action.She's only gone and run off with the milkman! •(no longer used) Above all others; particularly. adjective4 •Alone in a category.He is the only doctor for miles.The only people in the stadium were the fans: no players, coaches, or officials. •Without sibling; without a sibling of the same gender.He is their only son, in fact, an only child. •Singularly superior; the best.Motley's the only wear. — 1598 •(no longer used) Mere.I know some who wittingly have drawne both profit and preferment from cuckoldrie, the only name whereof is so yrksome and bail-ful to so many men. — 1603 conjunction3 •(informal) Introduces a clause with negative polarity, often one which upsets the listener's expectations. •(informal) But, except; but in fact.I would enjoy running, only I have this broken leg.She would get good results only she gets nervous. •(informal) Under the condition that; but.You're welcome to borrow my bicycle, only please take care of it. noun1 •An only child.Sometimes, secondborns marry onlys and the conflicts are similar. — 1995 particle1 •(Singapore, Singlish) Placed at the end of a sentence to emphasize that something is trivial, small, undemanding or deserving of belittlement.Just need to replace the filter only. formsonlies · onlys · onliest Phrases with only if onlyI wish that; would (that) (archaic). Signifies a wish or desire for the present or the future. one and onlyOnly love, sole sweetheart. only game in townThe only opportunity, activity, or resource available.