Inattentive is the opposite of attentive.
neglect
Caring, attentive.
The opposite of lack of attention is a state of focused attention or concentration. This means being fully engaged, attentive, and mentally present in the task or activity at hand.
Not flexible or having no flexibility
inflexible
Rigid
THE ANSWER FOR RIGIDITY IS FLEXIBLE.........
no- these 2 words are not opposites. In fact, their meanings are really quite unrelated.
If you mean bendy as flexible, the antonym of flexible will be stiff. Written by Brigitte.P age 13
Soft, easy, simple, flexible.
inflexible, unyielding, rigid, brittle