— greenhornism , n.
/green"hawrn'/ , n.
1. an untrained or inexperienced person.
2. a naive or gullible person; someone who is easily tricked or swindled.
3. Slang. a newly arrived immigrant; newcomer.
[ 1425-75; late ME; see GREEN, HORN; orig. applied to cattle with green (i.e., young) horns ]