From Longman Dictionary of Contemporary Englishover the moonover the moonBritish English informalHAPPY very happy She’s over the moon about her new job. → moon
Examples from the Corpus
over the moon• Staff here are all over the moon.• Although over the moon with it generally, I am disappointed with the lack of power in the naturally aspirated diesel engine.• If I found it - well, I'd be over the moon.• And Tony is over the moon about her.• She had been continually up the spout, or over the moon, about some one or something.• Yes, you've certainly scored a winner this month, folks, I hope you're over the moon about it!• I was so over the moon I walked all the way home to Streatham with this huge smile on my face.• I was over the moon for Tom, but I was also cold, wet, and in agony with my legs. 