Ill-boding is a related term of calamitous.
As adjectives the difference between ill-boding and calamitous
is that ill-boding is which bodes evil, spelling bad things while calamitous is concerning or involving calamity, disastrous.
ill-boding
English
Adjective
(
en adjective)
which bodes evil, spelling bad things
Synonyms
* inauspicious
Antonyms
* auspicious
Related terms
* ill-fated
calamitous
English
Adjective
(
en adjective)
Concerning or involving calamity, disastrous.
:The city was struck by a calamitous cyclone.
Synonyms
* destructive
* fatal