non-flexible

adjective

1. capable of being bent, usually without breaking; easily bent: a flexible ruler.
2. susceptible of modification or adaptation; adaptable: a flexible schedule.
3. willing or disposed to yield; pliable: a flexible personality.

noun

4. a flexible substance or material, as rubber or leather.

adjective

1. Also: flexile (ˈflɛksaɪl) able to be bent easily without breaking; pliable
2. adaptable or variableflexible working hours
3. able to be persuaded easily; tractable

adj.early 15c., from Middle French flexible or directly from Latin flexibilis “that may be bent, pliant, flexible, yielding;” figuratively “tractable, inconstant,” from flexus, past participle of flectere “to bend,” of uncertain origin. Related: Flexibly. adj.

1. Capable of being bent or flexed.
2. Capable of being bent repeatedly without injury or damage.