stand firm vs hold out

stand firm and hold out both are verbs.

Word	Noun	Adjective	Verb	Adverb
stand firm	No	No	Yes	No
hold out	No	No	Yes	No

As verbs, stand firm and hold out are synonyms defined as:

stand firm and hold out: stand up or offer resistance to somebody or something

Other synonyms of stand firm include resist, withstand.

stand firm (verb)	hold out (verb)
refuse to abandon one's opinion or belief	thrust or extend out
stand up or offer resistance to somebody or something	stand up or offer resistance to somebody or something
	continue to live and avoid dying
	last and be usable
	wait uncompromisingly for something desirable