rigid vs inflexible

rigid and inflexible both are adjectives.

Word	Noun	Adjective	Verb	Adverb
rigid	No	Yes	No	No
inflexible	No	Yes	No	No

As adjectives, rigid and inflexible are synonyms defined as:

rigid and inflexible: incapable of adapting or changing to meet circumstances

Other synonyms of rigid include unbending.

rigid (adjective)	inflexible (adjective)
designating an airship or dirigible having a form maintained by a stiff unyielding frame or structure	resistant to being bent
incapable of or resistant to bending	incapable of change
incapable of compromise or flexibility	not making concessions
fixed and unmoving	incapable of adapting or changing to meet circumstances
incapable of adapting or changing to meet circumstances