The term 'graceful African antelope' can be summarized by two crossword solutions: IMPALA (6 letters) and ORIBI (5 letters). The IMPALA is a medium-sized antelope native to Africa, known for its graceful leaps and bounds. It has a reddish-brown coat with white underparts and a black stripe running along its back. The ORIBI is a small antelope found in the grasslands of East and Southern Africa. It is characterized by its slender body and long legs, and is known for its graceful movements.