How to spell SIINCERELY correctly?

If you often misspell "sincerely" as "siincerely", don't worry, you're not alone. To correct this error, it may be helpful to break the word down into syllables: sin-cere-ly. Another handy tip is to remember that "s" always comes before "c" in English. Taking a moment to double-check can ensure your salutations look impeccable.