I've had enough!'
nyt	2005	UNCLE	Family man
nyt	2005	UNCLES	Family men
nyt	2005	UNCLIP	Detach, as a lapel mike
nyt	2005	UNCOIL	Straighten out
nyt	2005	UNCOLORED	Plain
nyt	2005	UNCORDIAL	Chilly
nyt	2005	UNCS	Family members, affectionately
nyt	2005	UNDER	See 20-, 38- and 54-Across
nyt	2005	UNDERAGE	Bounceable?
nyt	2005	UNDERDOG	How this answer is situated
nyt	2005	UNDERDOG	How this answer is situated
nyt	2005	UNDERDONE	Too pink, say
nyt	2005	UNDERGO	Experience
nyt	2005	UNDERGONE	Been through
nyt	2005	UNDERLOCKANDKEY	Like the thief at 17- and 27-Across
nyt	2005	UNDERLOCKETKEY	Beneath a pendant opener?
nyt	2005	UNDERREPAIR	End of the quip
nyt	2005	UNDERSPENDS	Is frugal
nyt	2005	UNDONE	Foiled
nyt	2005	UNDYED	Natural
nyt	2005	UNE	___ Charogne" (Baudelaire poem)
The 5th letter is E
The 3rd letter is C
The 4th letter is L