IPA: /ˈtɪniər/
KK: /ˈtɪniər/
Having a thin, high-pitched sound that is often unpleasant or lacking in depth.
The music sounded tinnier than usual because of the cheap speakers.
Comparative: tinnier
Superlative: tinniest
The word 'tinnier' is formed from 'tin' (from Old English 'tin', meaning a type of metal) and the suffix '-ier' (meaning more). The word 'tinnier' means more like tin or having the qualities of tin.
Think of 'tin' as a type of metal, and remember that 'tinnier' means something that is more like tin.