abnormous
adj. C2 Proficiency ab·nor·mous
adj. extremely large or unusual. This word is very old and you will only see it in very old books or poems.
adj. exceptionally large or abnormal in size or degree.
The ancient stone was abnormous in size.
The poet described the mountain as abnormous, towering over the valley with a presence that felt almost divine.
In the 18th-century treatise, the author noted that the abnormous growth of the city's population had strained the existing infrastructure beyond its original capacity.
From Latin abnormis, from ab- + norma (“rule”), + -ous. For more, see normal.