weighty

/หˆweษชti/

IPA: /W EY1 T IY0/

adjective
  1. 1

    Heavy.

  2. 2

    Important; serious; not trivial or petty.

    โ€œa weighty argumentโ€

  3. 3

    Rigorous; severe; afflictive.

Source: https://en.wiktionary.org/wiki/weighty