AGGRADE is a 7 letter word that starts with A.
\Ag*grade"\, v. t. [imp. & p. p. {Aggraded}; p. pr. & vb. n. {Aggrading}.] (Phys. Geog.) To bring, or tend to bring, to a uniform grade, or slope, by addition of material; as, streams aggrade their beds by depositing sediment.