Open English Wordnet
Nouns
(n)retirement, retreatwithdrawal for prayer and study and meditation“the religious retreat is a form of vacation activity”
Verbs
(v)retreat, pull back, back out, back away, crawfish, crawfish out, pull in one's horns, withdrawmake a retreat from an earlier commitment or activity“We'll have to crawfish out from meeting with him”, “He backed out of his earlier promise”, “The aggressive investment company pulled in its horns”