IPA: /ˈtaɪniər/
KK: /ˈtɪniər/
Smaller in size than something else that is also small.
The kitten is tinier than the puppy.
Tinier → It is formed from "tiny" (from Middle English *tini*, meaning small or little) and the suffix "-er" (meaning more). The word "tinier" means more tiny or smaller in size.
Think of something that is 'more small' — 'tiny' means small, and '-er' indicates a comparison, so tinier means even smaller.