IPA: /ɪnˈtræktəbl/
KK: /ɪnˈtræktəbl/
Something that is hard to control, manage, or change, often because it is stubborn or resistant.
The intractable problem required a new approach to find a solution.
Intractable → It is formed from "in-" (meaning not) and "tractabilis" (from Latin, meaning able to be pulled or drawn). The word describes something that cannot be easily managed or controlled, hence, difficult to handle.
Think of something that is 'not able to be drawn' or managed easily — 'in-' means not, and 'tractabilis' relates to being pulled or handled.