Definition of certainly in English:

certainly

adverb

  • 1sentence adverb Undoubtedly; definitely; surely.

    ‘the prestigious address certainly adds to the firm's appeal’
    ‘it certainly isn't worth risking your life’
    • ‘On the other hand, if it turns out to be true, they certainly can claim to have been the first to mention it.’
    • ‘It is certainly worth spending a few hours exploring here, even if you choose not to spend the night.’
    • ‘It is telling them that and it is not true and it is certainly not proven to be true.’
    • ‘It adds musical depth and certainly creates new levels of interest in most if not all of the tracks.’
    • ‘One of those deficiencies will certainly be addressed and you can guess which one.’
    • ‘It may be true of good wine, but it is certainly not true of a good sommelier.’
    • ‘While that may certainly have been true a decade ago, it cannot be said to be the case now.’
    • ‘First, it is certainly true that some judges are liberal, much more so than in the past.’
    • ‘Now this may be true, and certainly supporters of Marx have tried hard to establish it.’
    • ‘It certainly adds to the enjoyment, making the Vanquish an easier car to get to know.’
    • ‘On the east coast, a three-hour drive from Tofino, it is certainly worth a short stay.’
    • ‘There are others as well, of course, and one of them will almost certainly come true.’
    • ‘It has taken many years for the book to reach us and it was certainly worth the effort.’
    • ‘It certainly is true that people need to avoid certain things if we're going to survive.’
    • ‘League consolidation is the main aim but a good cup run will certainly add to the already high team spirit.’
    • ‘This certainly adds a realistic dimension to the film and brings the stories down to earth.’
    • ‘It is certainly true that it is very difficult to use economics as a predictor of markets.’
    • ‘It is certainly not true to say that trains do not stop in Guiseley because they are already full.’
    • ‘It took a while to get to the front of the line, but it was certainly worth the wait.’
    • ‘Sitting in a full and happy cinema certainly adds another dimension to a film.’
    unquestionably, surely, assuredly, definitely, beyond question, without question, beyond doubt, unequivocally, indubitably, undeniably, irrefutably, indisputably, incontrovertibly, incontestably, obviously, patently, manifestly, evidently, plainly, clearly, transparently, palpably, unmistakably, conclusively, undisputedly, undoubtedly
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    1. 1.1 (in answer to a question or command) yes; by all means.
      ‘“A good idea,” she agreed. “Certainly!”’
      • ‘"Why, certainly," replied Hardin, amiably. "We're all scholars more or less."’
      • ‘"Certainly, madam," he replied.’
      • ‘"Why certainly. This one here, this cute plushie, is great for girls of that age."’
      yes, definitely, absolutely, sure, by all means, quite, indeed, of course, positively, naturally, without doubt, without question, unquestionably
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Pronunciation

certainly

/ˈsərtnli//ˈsərtnlē/