Student Thesaurus

One entry found for portentous.
Entry Word: portentous
Function: adjective
Text: 1 being or showing a sign of evil or calamity to come <an eerie and portentous stillness hung over the camp the night before the battle> -- see OMINOUS
2 causing wonder or astonishment <in 1969 people regarded the first landing on the moon as a truly portentous event> -- see MARVELOUS 1