A sharp warning is a type of warning that is meant to be taken seriously. The crossword solutions for this term are 'LOOKOUT' (7 letters) and 'handsoff' (8 letters). LOOKOUT is a term used to describe someone who is keeping watch or paying attention to their surroundings, while handsoff is a phrase used to indicate that someone should not interfere or touch something. Together, these two words can be used to describe a sharp warning, which is a warning that should be taken seriously and heeded.