happy... oh wait
A four-letter synonym for Ireland is "Eire" - but this is not an abbreviation.
Mend
Exam.
into
Eros
veg out = rest
yore
happy, pleased, satisfied, relieved.
Wadi
buff, sand, gold
"soda" is a four letter synonym for cola. http://en.wikipedia.org/wiki/Soda
Pleased, entertained, titillated.