In the context of crossword puzzles, a clue like “REPEL” might be used to prompt the solver to fill in the answer. This relies on the double meaning of the word; it can signify causing something to retreat, as in insects or an enemy attack, and it can also mean to cause aversion or disgust. This wordplay is a core component of crossword puzzle design.
Cryptic crosswords, in particular, often employ such ambiguous clues, demanding lateral thinking and an appreciation of wordplay. The ability to decipher these clues sharpens vocabulary, improves problem-solving skills, and provides a stimulating mental exercise. The evolution of crossword puzzles has seen an increasing complexity in clue construction, reflecting a growing sophistication in this form of entertainment.