1. most abundant or prevalent; occurring in the greatest degree
Usage: superlative form of ‘rife’

Examples

• Corruption was rifest in the poorest districts of the city.
• The disease spread fastest where sanitation problems were rifest.
• Rumors were rifest during the weeks before the announcement.
• Crime is rifest in areas with high unemployment.
• Speculation about the merger was rifest among industry insiders.
• The practice was rifest during the economic downturn.