Antonyms of adj bendable

1 sense of bendable

Sense 1
bendable, pliable, pliant, waxy -- (capable of being bent or flexed or twisted without breaking; "a flexible wire"; "a pliant young tree")

INDIRECT (VIA flexible) -> inflexible -- (resistant to being bent; "an inflexible iron bar"; "an inflexible knife blade";)

Similarity of adj bendable

1 sense of bendable

Sense 1
bendable, pliable, pliant, waxy -- (capable of being bent or flexed or twisted without breaking; "a flexible wire"; "a pliant young tree")
       => flexible (vs. inflexible), flexile -- (able to flex; able to bend easily; "slim flexible birches")