weighty

(a) having relatively great weight; heavy
- a weighty load
- a weighty package
(s) powerfully persuasive
- a cogent argument
- a telling presentation
- a weighty argument
cogent, telling,
(s) of great gravity or crucial import; requiring serious thought
- grave responsibilities
- faced a grave decision in a time of crisis
- a grievous fault
- heavy matters of state
- the weighty matters to be discussed at the peace conference
grave, grievous, heavy,
(s) weighing heavily on the spirit; causing anxiety or worry
- weighty problems
(s) excessively fat
- a weighty man
corpulent, obese, rotund,

cogent telling grave grievous heavy corpulent obese rotund

weightless

weight

weigher