Sentence:  [A] string of huge woolly camels, most powerful and <WSD>ungainliest</WSD> of their kind, swaying along beneath their loads as they thrust out their shaggy snaky necks in an aimless fashion from side to side, and frightening our nags in a desperate scramble to get out of the way up the mountain slope; ... 
Meaning of the word marked with <WSD> tags:  Clumsy; lacking grace.