Related by context. Frequent words. (Click for all words.) 68 illness 59 sicknesses 57 Sickness 54 sick 54 illnesses 53 tiredness 51 Illness 50 bronchitis 50 absenteeism 49 affliction 49 debilitating illness 49 exhaustion 48 stomach bug 47 malady 47 ailment 47 ailments 47 chronic illness 47 colds 47 backache 47 respiratory illness 47 absences 46 gastroenteritis 46 pneumonia 46 diarrhea 46 maladies 46 flu bug 46 contagious disease 45 forgetfulness 45 dysentery 45 fatigue 45 sore throat 45 jet lag 44 indigestion 44 afflictions 44 depression 44 incapacity 44 colic 44 loneliness 44 tonsillitis 43 disease 43 meningitis 43 strep throat 43 conjunctivitis 43 altitude sickness 43 sinus infection 43 stomach ache 43 mononucleosis 43 disability 43 symptoms 43 typhoid 43 chicken pox 42 ear infection 42 hangovers 42 flu 42 boredom 42 hay fever 42 sore throats 42 homesickness 42 lethargy 42 sickness absence 42 aches 42 dehydration 42 rheumatism 41 stomach cramps 41 motion sickness 41 sleeplessness 41 lung infection 41 glandular fever 41 stomach ulcers 41 toothache 41 jetlag 41 malnutrition 41 ill 41 discomforts 41 unwell 41 fevers 41 typhoid fever 41 malnourishment 41 infirmity 41 heath 41 nausea 41 sleepiness 41 laziness 40 bereavement 40 debilitating 40 infection 40 chickenpox 40 shin splints 40 post natal depression 40 poisoning 40 overwork 40 itis 40 viral infection 40 Illnesses 40 lameness 40 chronic fatigue 40 breathing difficulties 40 insomnia 40 disorientation 40 blisters 40 anxiety