Choose the method before changing the text
For a plain-text field, try a short Unicode phrase from this generator. In a rich-text editor, select the phrase and use its italic control. On a website you own, semantic emphasis can be marked with HTML em. These methods are not interchangeable: literal HTML tags pasted into a normal text field are usually just text.
Italicize specific words here
Check Only italicize specific words, then enter comma-separated whole words with matching capitalization. Entering quiet changes quiet but not Quiet or quietly. The feature matches all occurrences. For a single phrase within a longer message, generate that phrase separately and paste it into the original.
Understand what gets copied
Unicode conversion copies styled characters. Markdown copies punctuation that a compatible parser interprets, such as *quiet moment*. Native rich text may carry formatting only when the receiving editor accepts it. Pick the method based on the actual destination, then test a small example before replacing your original.