Similar words: less, bless, nonetheless, much less, homeless, senseless, no less than, more or less. Meaning: [ʌnˈles] 
conj.1. except under the circumstances that: I'll be there at nine, unless the train is late. prep. 2. except; but; save: Nothing will come of it, unless disaster..
conj.1. except under the circumstances that: I'll be there at nine, unless the train is late. prep. 2. except; but; save: Nothing will come of it, unless disaster.. 
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(61) Unless I'm mistaken, he didn't specify what time.
(62) Substances have no tendency to expand unless heated.
(63) These bacteria are invisible unless viewed with a microscope.
(64) Most dogs will not attack unless provoked.
(65) I shall go there tomorrow unless I'm too busy.
(66) You won't show anyone up unless you work hard.
(67) Unless we start making some sales, we're done for.
(68) unless you call watching TV a hobby.
(69) unless you'd prefer a cold drink.
(70) It'll remain a secret unless someone blabs.
(71) He resolutely refused to speak English unless forced to.
(72) That's the plan—unless anything untoward happens.
(73) Unless paying by credit card, please pay in cash.
(74) Nothing will come of it, unless disaster.
(75) Unless something unexpected happens, I'll see you tomorrow.
(76) Unless she loses some weight, she's had it.
(77) Don't borrow unless you intend to repay.
(78) Such schemes mean little unless they impact on people.
(79) The boat will sink unless we bail out.
(80) The boat will sink unless we bail .
(81) You're not to leave your station unless told.
(82) They won't pay unless you lean on them.
(83) Unless we're all a lot more careful,(http://sentencedict.com/unless.html) the people who have died so far will be just the tip of the iceberg.
(84) Unless you return the form within seven days, the offer will be withdrawn.
(85) There's no snake known that will habitually attack human beings unless threatened with its life.
(86) Scientists are warning that unless carbon emissions are cut, we could be heading for an environmental catastrophe.
(87) Unless a song gets lots of airplay, it won't sell in the shops.
(88) This film is unlikely to attract large audiences unless it gets/it is given a big push in the media.
(89) The temptation to exploit consumers usually prevails unless it is curbed.
(90) Substances have no tendency to expand unless ( they are ) heated.
More similar words: less, bless, nonetheless, much less, homeless, senseless, no less than, more or less, regardless, nevertheless, regardless of, unlike, unlikely, sales, wholesale, telescope, adolescent, tablespoon, cholesterol, Palestinian, mess, essay, press, assess, Messrs, access, stress, dress up, vessel, impress.