Growing

• Accumulating, as interest
• Adding up, as interest
• Gathering, like interest in a savings account
• Gathering, as interest

Wiktionary Word definitions in Wiktionary
vb. (present participle of accrue English)

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Accrue \Ac*crue"\ ([a^]k*kr[udd]"), v. i. [imp. & p. p. Accrued ; p. pr. & vb. n. Accruing .] [See Accrue , n., and cf. Accresce , Accrete .] To increase; to augment. And though power failed, her courage did accrue. --Spenser. To come to by way of increase; ...