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

See also: difficult, hard

• artificial joint
• artificial kidney
• artificial lake
• artificial language
• artificial pacemaker
• artificial respiration
• artificial satellite
• artificial skin
• artificiality
• artificially
• artillery
• artillery fire
• artillery plant
• artillery shell
• artillery unit
• artilleryman
• artiness
• artiodactyl
• artiodactyl mammal
• Artiodactyla
• artiodactylous
• artisan
• artisan's lien
• artist
• artist's loft