weighty
adjective
1. having relatively great weight; heavy
- a weighty load
- a weighty package
2. powerfully persuasive
- a weighty argument
Similar word(s): persuasive, cogent, telling
3. of great gravity or crucial import; requiring serious thought
- the weighty matters to be discussed at the peace conference
Similar word(s): important, grave, grievous, heavy
4. weighing heavily on the spirit; causing anxiety or worry
- weighty problems
Similar word(s): heavy
5. excessively fat
- a weighty man