increase   
manabetsaka
to make to increase, to cause to become many [Richardson 1885]
miampy
to increase in number or quantity; to increase by so much [Hallanger 1973]
miandalana
to increase or diminish by degrees, to increase or decrease gradually, to abate gradually; to be arranged, to be in order. [Richardson 1885]
to increase by degrees; by degrees, as one goes along [Hallanger 1973]
mihady
to dig, to delve; to spread, to increase, or to deepen, as a disease or an ulcer; to go to the very root of the matter. [Richardson 1885]
mitombo
to increase; to grow [Hallanger 1973]
tombo
an increase, a profit, a surplus [Hallanger 1973]