Not able to be changed or adapted.

अडिग

English Usage: The company has an inflexible policy regarding remote work.

Hindi Usage: कंपनी की दूरस्थ कार्य करने की नीति अडिग है।

The quality of being rigid or unable to change.

कठोरता

English Usage: His inflexible led to a lack of compromise in the negotiations.

Hindi Usage: उसकी कठोरता ने वार्ता में समझौते की कमी पैदा की।