clumsiness in WordNet English dictionary

1. the carriage of someone whose movements and posture are ungainly or inelegant
   awkwardness  clumsiness 
   
2. the inelegance of someone stiff and unrelaxed (as by embarrassment)
   awkwardness  clumsiness  gracelessness  stiffness 
   
3. unskillfulness resulting from a lack of training
   awkwardness  clumsiness  ineptness  ineptitude  maladroitness  slowness