sponsion /sponˈshən/

1. The act of becoming surety for another
2. An agreement or promise made on behalf of another, esp by an individual on behalf of his or her government

sponˈsional adjective

• grume
• grumes
• grumly
• grummer
• grummest
• grummet
• grummet-hole
• grummet-holes
• grummets
• grumness
• grumnesses
• grumose
• grumous
• grump
• grumped
• grumph
• grumphed
• grumphie
• grumphies
• grumphing
• grumphs
• grumpier
• grumpies
• grumpiest
• grumpily