hearken /härˈkn/ (archaic or literary)

1. To hear attentively
2. To listen

1. To listen to, pay attention to, heed (poetic)
2. To seek by enquiry (obsolete)

• retroflections
• retroflex
• retroflexed
• retroflexes
• retroflexing
• retroflexion
• retroflexions
• retrogradation
• retrogradations
• retrograde
• retrograded
• retrogradely
• retrogrades
• retrograding
• retrogress
• retrogressed
• retrogresses
• retrogressing
• retrogression
• retrogressional
• retrogressions
• retrogressive
• retrogressively
• retroject
• retrojected