• IPA: /əv ˈkɔː(ɹ)s/
• (horse-hoarse) IPA: /əv ˈkoə(ɹ)s/

of course

1. (now, rare, except in matter of course) That is part of ordinary behaviour or custom; customary, natural. [from 16th c.]
   • 1849, Thomas Babington Macaulay, Miscellaneous Writings:

     I am not using a mere phrase of course, when I say that the feelings with which I bear a part in the ceremony of this day, are such as I find it difficult to utter in words.

of course (not comparable)

1. (now, rare) In due course; as a natural result. [from 16th c.]
   • 1790, Mary Wollstonecraft, A Vindication of the Rights of Men:

     Not tarrying long enough in the brain to be subject to reflection, the next sensations, of course, obliterate them.

   • 1845, Henry John Stephen, New commentaries on the laws of England:

     It was at one time made a question whether giving the royal assent to a single bill did not of course put an end to the session.

2. (idiomatic) Naturally, as would be expected; for obvious reasons, obviously. [from 19th c.]

   Synonyms: naturally, indisputably

   Of course I know that!  You will, of course, surrender all your future rights to the property.

   • 1907, Robert William Chambers, chapter IX, in The Younger Set, New York, N.Y.: D. Appleton & Company, OCLC 24962326 ↗:

     “Heavens!” exclaimed Nina, “the blue-stocking and the fogy!—and yours are pale blue, Eileen!—you’re about as self-conscious as Drina—slumping there with your hair tumbling à la Mérode! Oh, it's very picturesque, of course, but a straight spine and good grooming is better. […]”

   • 2012, Christoper Zara, Tortured Artists: From Picasso and Monroe to Warhol and Winehouse, the Twisted Secrets of the World's Most Creative Minds, part 1, chapter 1, gbooks :

     There were other flapper-era starlets, of course—Louise Brooks, Greta Garbo—but they were poseurs by comparison.

• French: bien sûr, bien entendu, naturellement, évidemment
• German: selbstverständlich, natürlich, sicher, allerdings
• Italian: certo, per forza, naturalmente, senz'altro
• Portuguese: claro, naturalmente, lógico
• Russian: коне́чно
• Spanish: por supuesto, desde luego, claro, naturalmente, por descontado

• French: bien sûr
• Italian: certo
• Spanish: claro

1. (idiomatic) Indicates enthusiastic agreement.

   Will you come with me? — Of course!