grandiose vs la-di-da

grandiose and la-di-da both are adjectives.

Word	Noun	Adjective	Verb	Adverb
grandiose	No	Yes	No	No
la-di-da	No	Yes	No	No

As adjectives, grandiose and la-di-da are synonyms defined as:

grandiose and la-di-da: affectedly genteel; to carry an air of affected importance; to be snobbish and haughty

Other synonyms of grandiose include hifalutin, highfalutin, highfaluting, hoity-toity.

grandiose (adjective)	la-di-da (adjective)
impressive because of unnecessary largeness or grandeur; used to show disapproval	affectedly genteel; to carry an air of affected importance; to be snobbish and haughty
affectedly genteel; to carry an air of affected importance; to be snobbish and haughty