severe

adjective (severer, severest)

• 1(of something bad or undesirable) very great; intense:a severe shortage of technicians a severe attack of asthma damage is not too severe
• demanding great ability, skill, or resilience:a severe test of stamina

• 2strict or harsh:the charges would have warranted a severe sentence he is unusually severe on what he regards as tendentious pseudo-learning

• 3very plain in style or appearance:she wore another severe suit, gray this time