As verbs the difference between tiddling and twiddling
is that tiddling is present participle of lang=en while twiddling is present participle of lang=en.
As a noun twiddling is
the act of one who twiddles.
twiddling
English
Verb
(head)
Noun
(
en noun)
The act of one who twiddles.
* 1970 , United States. Congress, Congressional Record
- No doubt there are boys today whose twiddlings with an electrified guitar will lead them into rewarding careers like Kenin's.