severe

severe, painful; serious

strange; unusual; causing doubt or suspicion; unwell; sick

odd; abnormal

very bad or wrong; causing shock; severe

outrageous; very surprising

suggesting evil or the likelihood of bad luck

nasty, menacing

very good; very great; extreme

intense

causing worry, unhappiness, difficulty

bothersome, worrisome

not satisfactory

insufficient, inadequate

causing worry

troublesome