One on a ladder, to a kitten up a tree

• Encourager
• One using soft soap
• Encouraging sort
• Sweet talker
• Cajoling one
• Persuasive sort

Wiktionary Word definitions in Wiktionary
n. A person who coaxes

WordNet Word definitions in WordNet
n. someone who tries to persuade by blandishment and coaxing [syn: wheedler ]

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Coaxer \Coax"er\, n. One who coaxes.