IPA: /ɪnˈkriːzəbl/
KK: /ɪnˈkriːzəbl/
Relating to something that can be made larger or greater in amount, size, or degree.
The budget is increasable if we find additional funding sources.
Increasable → It is formed from "in-" (meaning not) and "creasable" (from the root "creare" meaning to create or grow, with the suffix "-able" meaning capable of). The word "increasable" means capable of being increased or grown.
Think of something that is 'capable of being grown' — 'creasable' comes from 'create' or 'grow', and the 'in-' means not, so 'increasable' refers to something that can indeed be increased.