twiddler
twidd·ler
noun
1.
someone who manipulates in a nervous or unconscious manner
Origin
From twiddle + -er.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.