weighty

About 1.13 uses per million words.

Meaning

1. adjective Having a lot of weight; heavy.
2. adjective Important; serious; not trivial or petty.

   a weighty argument

3. adjective Rigorous; severe; afflictive.

Similar words

heavy telling forceful obese corpulent fat important grievous cogent rotund

Often followed by

and reasons matters matter a arguments than as considerations

Word family

weightier weightiest weightily weightiness weightinesses