upsize

up size |ˈəpˌsīz ˌəpˈsaɪz | ▶verb increase or cause to increase in size or complexity.

upsize

up ¦size ▶verb [ with obj. ] increase the size, extent, or complexity of: they are considering upsizing their information systems. • [ no obj. ] undergo an increase in size, extent, or complexity: the economy kept on upsizing.