Significatio vocis gravior | Babel Free

Definitiones

1. comparative degree of gravis
   comparative, declension-3, form-of
2. more heavy, serious, pregnant, grave, burdensome, grievous
   comparative, declension-3

Exempla

“… aut graviōra timet quam morte Sychaeī. / Ergō iussā pārat.”

Or else [Anna] fears [nothing] more serious than [Dido’s grief] at the death of Sychaeus. So she makes preparations per [Dido’s] orders.

Gradus CEFR