'energy', lit. 'virility', 'manliness' or 'heroism' (from vīra, man, hero; Lat. vir; cf. virtus),

• is one of the 5 spiritual faculties and powers (s. bala),

• one of the 7 factors of enlightenment (s. bojjhanga) and

• identical with right effort of the 8-fold Path (s. magga).

For further explanations, s. padhāna.