What does giddish mean?

"Giddish" is not a standard English word. It is likely a misspelling of "giddy," which means:

* Feeling lightheaded or dizzy, often due to excitement or nervousness.

* Behaving in a frivolous or silly way, often due to excitement.

* Characterized by frivolous or silly behavior.

For example:

* "She was giddy with excitement after winning the lottery."

* "He was in a giddy mood after the party."

* "The children were giddy with laughter."