follow up (v.)

• attend
• chase
• chivy
• chorus
• displace
• dog
• emanate
• ensue
• follow
• hound
• hunt
• issue
• nose
• overtake
• prosecute
• pursue
• quest
• refrain
• replace
• result
• search
• seek
• shadow
• stalk
• succeed
• suffix
• supervene
• supplement
• tag
• tail
• trace
• track
• trail