Synonyms of the word

unadaptable

• adj. Not adaptable.

inflexible

• adj. Not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding.
• adj. Not willing to change, e.g. one's opinion or habits; obstinate; stubborn; resolute; determined.

rigid

• adj. Stiff, rather than flexible.
• adj. Fixed, rather than moving.
• adj. Rigorous and unbending.
• adj. Uncompromising.
• n. A bicycle with no suspension system.

unbending

• adj. inflexible and not yielding.
• adj. very reserved, aloof and antisocial.
• v. present participle of unbend.
• n. The act of one who unbends.