extended vs drawn-out

extended and drawn-out both are adjectives.

Word	Noun	Adjective	Verb	Adverb
extended	No	Yes	No	No
drawn-out	No	Yes	No	No

As adjectives, extended and drawn-out are synonyms defined as:

extended and drawn-out: relatively long in duration; tediously protracted

Other synonyms of extended include lengthy, prolonged, protracted.

extended (adjective)	drawn-out (adjective)
fully extended or stretched forth	relatively long in duration; tediously protracted
beyond the literal or primary sense	(used of speech) uttered slowly with prolonged vowels
large in spatial extent or range or scope or quantity
drawn out or made longer spatially
relatively long in duration; tediously protracted