IPA: /ˌʌn.əˈdæp.tə.bəl/
KK: /ʌnəˈdæptəbl/
Not able to change or adjust to new conditions or situations.
The old machinery is unadaptable to modern technology.
Unadaptable → It is formed from "un-" (meaning not) and "adaptare" (meaning to adjust or fit). The word describes something that cannot be adjusted or fitted to new conditions or circumstances.
Think of 'not' ('un-') being able to 'adjust' ('adaptare') — that's why unadaptable means something that cannot adjust.