资料来源 : pyDict

妨碍的;障碍的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Impedimental \Im*ped`i*men"tal\, a.
   Of the nature of an impediment; hindering; obstructing;
   impeditive.

         Things so impediental to success.        --G. H. Lewes.