1. With respect to function
   "the two units are functionally interdependent"

See also: functional

• buteonine
• butler
• butt
• butt against
• butt end
• butt hinge
• butt in
• butt joint
• butt pack
• butt shaft
• butt-welding
• butte
• butter
• butter churn
• butter cookie
• butter daisy
• butter dish
• butter knife
• butter tart
• butter up
• butter-and-eggs
• butter-bean plant
• butter-print
• butterball
• butterbean