bidirectional /bī-dī-rekˈshə-nəl/

1. Operating or passing signals in two directions
2. Printing the lines of a text alternately left to right and right to left (computing, etc)

• farer
• farers
• fares
• fare stage
• fare stages
• heart of hearts
• heart of oak
• heart of palm
• heartpea
• heart-quake
• heart-rending
• heart-rot
• hearts
• heart's-blood
• heart-searching
• heart's-ease
• heartsease
• heartseed
• heartseeds
• heart-service
• heart-services
• heart-shaped
• heart shell
• heartsick
• heartsickness