The term 'keenly desirous' can be summarized by two crossword solutions: 'AVID' and 'EAGER'. Both words describe a strong desire or enthusiasm for something. 'AVID' is derived from the Latin word 'avidus', which means 'GREEDY' or 'EAGER'. 'EAGER' is derived from the Old English word 'eage', which means 'ARDENT' or 'FERVENT'. Both words imply a strong, passionate desire for something. Therefore, the term 'keenly desirous' can be summarized as having a strong, passionate desire for something.