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очень счастлив stresses
gen.	only too glad; only too pleased; thrice happy
amer.	be beyond happy (Bauirjan)
inf.	happy to the max (Andrey Truhachev)
очень счастливый
gen.	as happy as the day is long; as happy as a clam at high water (Svetlana D); as happy as Larry (Svetlana D); as happy as a sandboy (Svetlana D)
amer.	jubuliant (Enrica)
austral., slang	happy as a pig in mud; happy as Larry
idiom.	as happy as a lark (senia_m); as happy as a clam (senia_m); as happy as a dog with two tails (senia_m)
inf.	happy as a clam (OL.Sh.)
slang	happy as a puppy with two peckers (collegia)
vulg.	happy as a pig in shit

очень счастлив: 29 phrases in 4 subjects

Figure of speech	1
General	7
Idiomatic	3
Makarov	18