1. dull in mind; stupid or lethargic; lacking mental sharpness or alertness
Usage: formal or literary; rare in modern usage

Examples

• The hebetudinous response from the committee frustrated those seeking swift action.
• After hours of monotonous lectures, the students grew hebetudinous and inattentive.
• His hebetudinous manner made it difficult for him to grasp complex ideas.
• The hebetudinous pace of the bureaucracy delayed the project for months.
• She found his hebetudinous wit tiresome and preferred sharper conversation.