Modifiers matching grump:

• grouchy,
• condescending,
• greedy,
• covetous,
• heartless,
• fastidious,
• jealous,
• rich,
• miserly,
• misanthropic,
• impatient,
• ill-tempered,
• penny-pinching,
• wealthy,
• arrogant,
• mean,
• principled,
• grizzled,
• gruff,

Simple categories matching grizzled:

• warrior,
• actor,
• grump,
• cowboy,
• person,
• pianist,
• guitarist,
• musician,
• director,