A software program or program feature designed to locate misspelled words and notify the user of the misspellings. Depending on the spell checker, the feature may either autocorrect the word or allow the user to select from potential corrections on the misspelled word. In the picture, is an example of wavy red underlines and an example of how spelling errors in Microsoft Word are displayed. When running a spell check on a document with red underlines, Word gives suggestions for each misspelled word. The red wavy underline can also be right-clicked to display corrections on the misspelled word.
Although spell checkers have become one of the most commonly used features in many programs, they have also become a hindrance. Some have become so dependent on spell checkers that their spelling and grammar skills have declined, and they have a difficult time writing anything correctly without the help of a computer.
How does a spell checker work?
The spell checker works by comparing every word typed with a list of thousands of correctly spelled, words and then uses algorithms to determine the correct spellings. If a word, such as a name, is correctly spelled, you have the option of adding the word to the list of correctly spelled words that can be used for future comparison.
How to access the spell checker
The F7 function key is the default key to start the spell check feature in Word and other programs that have spell checking features.
While spell checkers are a great feature, you should always proofread what you've written before hitting the send, print, or post button. A word may be spelled correctly but is not the word you intended to use.