grievous
1. [ adjective ] causing fear or anxiety by threatening great harm
Synonyms: serious grave severe dangerous
Examples:

"a dangerous operation" "a grave situation" "a grave illness" "grievous bodily harm" "a serious wound" "a serious turn of events" "a severe case of pneumonia"

Related terms: critical
2. [ adjective ] causing fear or anxiety by threatening great harm
Synonyms: serious grave severe dangerous life-threatening
Examples:

"a dangerous operation" "a grave situation" "a grave illness" "grievous bodily harm" "a serious wound" "a serious turn of events" "a severe case of pneumonia" "a life-threatening disease"

Related terms: critical
3. [ adjective ] causing or marked by grief or anguish
Synonyms: heartrending heartbreaking
Examples:

"a grievous loss" "a grievous cry" "her sigh was heartbreaking" "the heartrending words of Rabin's granddaughter"

Related terms: sorrowful
4. [ adjective ] of great gravity or crucial import; requiring serious thought
Synonyms: heavy weighty grave
Examples:

"grave responsibilities" "faced a grave decision in a time of crisis" "a grievous fault" "heavy matters of state" "the weighty matters to be discussed at the peace conference"

Related terms: important
5. [ adjective ] shockingly brutal or cruel
Synonyms: monstrous flagitious heinous atrocious
Examples:

"murder is an atrocious crime" "a grievous offense against morality" "a grievous crime" "no excess was too monstrous for them to commit"

Related terms: evil
Similar spelling:   grievously
  Grieves
  greaves
  Gravois