1) Bad condition 2) Health problem 3) Ill health 4) Poor shape 5) Unhealthiness 1) Debility 2) Disability 3) Disablement 4) Disqualification 5) Feebleness 6) Frailness 7) Frailty 8) Handicap 9) Inaptitude 10) Incompetence 11) Incompetency 12) Inexpedience 13) Infirmity 14) Insensitiveness 15) Insensitivity 16) Unadaptability 
[n] - poor physical condition 2. [n] - the condition of not being suitable
noun the condition of not being suitable; `the judges agreed on his unfitness for the appointment`