1. Requiring great effort
   "a hard-fought primary"

See also: difficult, hard

• underpayment
• underperform
• underperformer
• underpin
• underpinning
• underplant
• right-winger
• righteous
• righteously
• righteousness
• righteye flounder
• righteyed flounder
• rightfield
• rightful
• rightfully
• rightfulness
• righthander
• rightish
• rightism
• rightist
• rightly
• rightmost
• rightness
• righto
• rights issue