1) Weak-voiced 
Weak-voiced. ... (05 Mar 2000) ... 
Type: Term Pronunciation: lep′tō-fon′ik Definitions: 1. Weak voiced.
leptophonia, leptophonic 1. A weak voice; hypophonia. 2. An abnormally weak voice due to incoordination of the muscles concerned in vocalization. 3. A weak, thin quality of the voice, resulting from general debility or certain myopathic or neurologic conditions.