Ooh

[oo] /u/

interjection
1.
(used to express amazement, satisfaction, excitement, etc.)
noun
2.
the exclamation “ooh.”.
verb (used without object)
3.
to utter or exclaim “ooh.”.
Idioms
4.
ooh and aah, to exclaim in wonder or admiration:
The crowds oohed and aahed at the spectacular fireworks.
/uː/
interjection
1.
an exclamation of surprise, pleasure, pain, etc

exclamation of pain, surprise, wonder, etc., 1916. Combined with aah from 1953. Ooh-la-la, exclamation of surprise or appreciation, is attested 1924, from French and suggestive of the supposed raciness of the French.
1.
Occupational Outlook Handbook
2.
on one hand

Read Also:

Ooh ah factor
noun phrase : Canham has dismissed notions that the university needs a big-name athletic director, an attribute referred to as the ”ooh, ah” factor (1980s+)
Ooh and ah
verb phrase To express wonder, amazement, etc: the spectators oohed and aahed at the trapeze artist (1953+)
Ooi
out of interest

Ook
noun A detestable, insipid person; nerd, wimp: Does even an ”ook” give out with a wolf whistle? (1940s+ Students)
On the wrong side of bed
see: get up on the wrong side