adjective Date: 15th century of, relating to, or constituting a portent , eliciting amazement or wonder ; prodigious , 3. being a grave or serious matter , self-consciously solemn or important ; pompous , ponderously excessive , see: ominous ~ly adverb ~ness noun
PORTENTOUS
Meaning of PORTENTOUS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012