"Tip" itself is already a 4-letter word! However, depending on the context, it could also refer to different things. Can you provide some more information about what kind of tip you're looking for? Some possibilities include:
4 Letters: APEX-PEAK-CLUE
- Advice: A helpful suggestion or piece of information.
- End: The pointed extremity of something.
- Gratuity: A payment given beyond what is owed, especially for services rendered.
- Peak: The highest point of something.
- Clue: A piece of information that helps to solve a puzzle or mystery.
Let me know if any of these fit your needs, or if you have something else in mind!
