To correctly pronounce tinnitus, break the word into two syllables. The first syllable is pronounced "tin" and the second syllable is pronounced "nigh-tus." The "tin" syllable should be pronounced with a short "i" sound, like the sound in the word "pin." The second syllable should be pronounced with a long "i" sound, like the sound in the word "night." Combined, the word should be pronounced "tin-nye-tus," with the emphasis on the first syllable.

When speaking the word, the lips should be slightly rounded, so that the "t" sound is slightly softened. The tongue should come up to the roof of the mouth to form the "n" sound, and the tip of the tongue should slightly curl up to form the "y" sound.

Ultimately, the correct pronunciation of tinnitus is "tin-nye-tus," with the emphasis on the first syllable. By breaking the word into two syllables, forming the correct sounds, and emphasizing the first syllable, you can now correctly pronounce tinnitus.