Gravest(adjective)
Giving cause for alarm.
Hindi meaning:सबसे गंभीर
Synonyms: Serious, Profound, Significant, Weighty, Vital, Crucial, Critical
Antonyms: Light, Trivial, Frivolous
Example: Terrorism is gravest concern to international community.
Trick to remember: Ajkal time pe harvest karna zaruri hai varna Gravest effect ho jate hai 
