slap-happy 
adjective informal
1Cheerfully casual in a careless or irresponsible way: he possessed slap-happy courage...
- One year after being slapped down by Bush's re-election, why are Hollywood liberals being so slap-happy now?
- Contrary to what my slap-happy friend might expect, Laura Doyle doesn't look like a monster - or a doormat.
- What's more, as individuals we tend to be very slap-happy about who's in and who's out of our own particular family.
Synonyms
happy-go-lucky, devil-may-care, carefree, cheerful, breezy, easy-going, nonchalant, insouciant, blithe, airy, casual, irresponsible
1.1(Of an action or operation) unmethodical; poorly thought out: slap-happy surveying methods...
- We believe there will be a downward spiral with this Government's policy, because it is a slap-happy, haphazard policy that is trying to bring in 45,000-plus people.
- Mr Tyler said: ‘Many Gulf veterans who have developed serious illnesses since have given us evidence of administration of vaccines which was at best slap-happy and at worst irresponsible.’
- With a slap-happy attitude to hygiene, and a proclivity towards being ‘influenced’ by others, the sign is traditionally associated with scabies, lice and skin infections caused by contamination.
2chiefly North American Dazed or stupefied by or as if by a series of blows to the head; punch-drunk: she’s a bit slap-happy after such a narrow escape...
- I could feel this slap-happy punch-drunk idiot grin appear on my face, widening exponentially.
- We're exhausted - and more than a little slap-happy.
- For several minutes, in my slap-happy, sleep-deprived state, I responded with lots of laughter and giggles.
Synonyms
dazed, stupefied, punch-drunk, unsteady, wobbly
Rhymes
- fairy martin
- fairy money
- fairy moss
- fairy mound
- fairy mushroom
- fairy nip
- fairyologist
- fairyology
- fairy palace
- fairy penguin
- fairy petticoats
- fairy pipe
- fairy primrose
- fairy prince
- fairy princess
- fairy prion
- fairy problem
- fairy queen
- fairy rade
- fairy ring
- fairy ring agaric
- fairy ring champignon
- fairy ring mushroom
- fairy rose
- fairy's cap