stopword 
noun
A word that is automatically omitted from a computer-generated concordance or index.Most novice searchers, and even skilled searchers who are frustrated in a search session, still put stopwords in their queries, but skilled searchers consider this to be just silly.
- field test
- field-theoretic
- field-theoretical
- field theorist
- field theory
- field tile
- field train
- field training
- field trash
- field trial
- field trip
- field violet
- field vole
- field walking
- fieldward
- field-watch
- field whore
- field winding
- field woman
- field woodrush
- field word
- fieldwork
- fieldworker
- fieldy
- fiend