1. bad-tempered, irritable, or difficult to deal with
2. difficult to read or understand, especially of handwriting

Examples

• The crabbed old man complained about everything.
• Her crabbed handwriting was nearly impossible to decipher.
• The professor’s crabbed response discouraged further questions.
• The ancient manuscript was written in crabbed script.
• His crabbed personality made him few friends.
• The lawyer’s crabbed notes were hard to follow.