From WordNet (r) 2.0 (August 2003) [wn]:
happy
adj 1: enjoying or showing or marked by joy or pleasure or good
fortune; "a happy smile"; "spent many happy days on
the beach"; "a happy marriage" [ant: unhappy]
2: experiencing pleasure or joy; "happy you are here"; "pleased
with the good news" [syn: pleased]
3: marked by good fortune; "a felicitous life"; "a happy
outcome" [syn: felicitous]
4: satisfied; enjoying well-being and contentment; "felt
content with her lot"; "quite happy to let things go on as
they are"
5: exaggerated feeling of well-being or elation [syn:
euphoric] [ant: dysphoric]
6: well expressed and to the point; "a happy turn of phrase";
"a few well-chosen words"; "a felicitous comment" [syn:
well-chosen]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Happy \Hap"py\ (h[a^]p"p[y^]), a. [Compar. Happier
(-p[i^]*[~e]r); superl. Happiest.] [From Hap chance.]
1. Favored by hap, luck, or fortune; lucky; fortunate;
successful; prosperous; satisfying desire; as, a happy
expedient; a happy effort; a happy venture; a happy omen.
[1913 Webster]
Chymists have been more happy in finding experiments
than the causes of them. --Boyle.
[1913 Webster]
2. Experiencing the effect of favorable fortune; having the
feeling arising from the consciousness of well-being or of
enjoyment; enjoying good of any kind, as peace,
tranquillity, comfort; contented; joyous; as, happy hours,
happy thoughts.
[1913 Webster]
Happy is that people, whose God is the Lord. --Ps.
cxliv. 15.
[1913 Webster]
The learned is happy Nature to explore,
The fool is happy that he knows no more. --Pope.
[1913 Webster]
3. Dexterous; ready; apt; felicitous.
[1913 Webster]
One gentleman is happy at a reply, another excels in
a in a rejoinder. --Swift.
[1913 Webster]
Happy family, a collection of animals of different and
hostile propensities living peaceably together in one
cage. Used ironically of conventional alliances of persons
who are in fact mutually repugnant.
Happy-go-lucky, trusting to hap or luck; improvident;
easy-going. "Happy-go-lucky carelessness." --W. Black.
[1913 Webster]
From The Free On-line Dictionary of Computing (19 Sep 2003) [foldoc]:
Happy
<tool> A dyslexic acronym for "A Yacc-like Haskell Parser
generator".
An LALR1 grammar parser generator for Haskell. Happy is
written in Haskell, uses a parser generated by itself, and can
be compiled using ghc, hbc or gofer. Happy uses an
implementation of monadic IO built on top of stream IO, but
this should change when the Haskell 1.3 standard has been
implemented.
Version: 0.9 (1996-02-28).
Happy is covered by the General Public License.
{Home (http://www.dcs.gla.ac.uk/fp/software/happy.html)}
{(ftp://ftp.dcs.gla.ac.uk/pub/haskell/happy/)}
E-mail: <andy@dcs.gla.ac.uk>, <simonm@dcs.gla.ac.uk>.
(1996-03-21)