Definition of monstrous adjective from the Oxford Advanced Learner's Dictionary

     

    monstrous

     adjective
    adjective
    BrE BrE//ˈmɒnstrəs//
     
    ; NAmE NAmE//ˈmɑːnstrəs//
     
    Attractiveness, Immoral
     
    jump to other results
  1. 1considered to be shocking and unacceptable because it is morally wrong or unfair synonym outrageous a monstrous lie/injustice See related entries: Immoral
  2. 2very large synonym gigantic a monstrous wave
  3. 3very large, ugly and frightening synonym horrifying a monstrous figure/creature See related entries: Attractiveness
  4. Word Origin late Middle English (in the sense ‘strange or unnatural’): from Old French monstreux or Latin monstrosus, from monstrum ‘portent or monster’, from monere ‘warn’. Current senses date from the 16th cent.
See the Oxford Advanced American Dictionary entry: monstrous