1. Difficult to pronounce; having a long or complicated sound.
Usage: informal
2. Extremely difficult to understand or deal with; challenging or complex.
Usage: informal

Examples

• The word 'antidisestablishmentarianism' is a jawbreaking term that few people can say correctly.
• She struggled with the jawbreaking pronunciation of the German city name.
• The contract contained jawbreaking legal language that required a lawyer to interpret.
• He faced a jawbreaking problem that took weeks to solve.
• The jawbreaking complexity of the math problem stumped most of the class.