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Discover LudwigThe word 'unpunctual' is correct and usable in written English
You can use it when referring to someone or something that does not arrive or happen at the appointed or expected time. For example: My uncle is always unpunctual, so we had to wait for over an hour before he finally joined us for dinner.
Dictionary
unpunctual
adjective
Not punctual.
Exact(31)
The main role in "Salad Days" is the poshest of daughters, harum-scarum and unpunctual, revelling in summer, sunshine and falling in love with her new boyfriend: "as young and as green as the leaves on the tree, for these are our salad days".
They say he is disorganised, unpunctual and lacks the intellectual appetite to take more than a passing interest in the output of the party's numerous policy working-groups.But Mr Kennedy's failings are no more than the flipside of his virtues.
The combination of the two is holding back productivity improvement, the mainspring of rising living standards; firms cannot take full advantage of new information technology through just-in-time production, for instance, if deliveries are unpunctual.
But so has the courtly figure of Mr Meri: formidably well read, and fluently caustic and charming in five languages.Most Estonians are pleased that his larger-than-life style has rubbed off on their little country, even though he often seems extraordinarily unEstonian: he is unpunctual, unpredictable, unaccountable and, on occasion, unbelievably mischievous.
Until then, there had been nothing remarkable about Cavell, who was charming, kind, but also, according to her matron, not particularly reliable, sometimes unpunctual and always annoyingly self-contained.
The more (self-) important the official, the more unpunctual he tends to be.
He himself was notoriously disorganised and unpunctual.
Readers who know only Petterson's most successful (also more straightforward and less interesting) novel, "Out Stealing Horses," which won many prizes when it appeared in English translation, in 2005, might be surprised to encounter these run-on sentences, tripping over their own dropped clauses, pricked with intermittence, properly punctuated but curiously unpunctual.
Even President Lucio Gutiérrez, infamously unpunctual, vowed to participate.
"When that begins, between the occupations of business and of entertainment, I shall become an unpunctual correspondent".
'Astute and Manipulative' Dr. Edmundo Chirinos, a psychiatrist who got to know Mr. Chávez as a patient, described him in a profile in The New Yorker in 2001 as "a hyperkinetic and imprudent man, unpunctual, someone who overreacts to criticism, harbors grudges, is politically astute and manipulative, and possesses tremendous stamina, never sleeping more than two or three hours a night".
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com