ppl. a. Obs. rare1. [? f. *energe vb. (back-formation from ENERGY) + -ING2.] ? Powerfully acting. (But perh. misprint for EMERGING.)

1

1749.  Smollett, Regicide, I. vi. (1777), 15. To stifle and repress Th’ energing dictates of my native right.

2