IPA: /ˈweɪtɪli/
KK: /ˈweɪtɪli/
In a manner that is heavy or serious, often implying importance or significance.
The speaker weightily addressed the audience about the importance of climate change.
Weightily → It is formed from "weight" (from Old English "wiht", meaning a measure of heaviness) and the suffix "-ily" (meaning in a manner). The word "weightily" means in a manner that is heavy or significant.
Think of 'weight' as a measure of heaviness, and remember that 'weightily' describes doing something in a heavy or significant manner.