Happy to help.
A happy turn of phrase.
A happy suggestion.
An example of happy is someone who wins the lottery.
An example of happy is a baby laughing.
Other Word Forms
Origin of happy
- Middle English from hap luck hap
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English happy, from hap (“chance”) (from Old Norse; see hap for more) + -y.