antecedent (n.)
- agency
- ancestor
- announcer
- anterior
- ascendant
- avant-garde
- base
- basis
- bellwether
- buccinator
- bushwhacker
- call
- causation
- cause
- chief
- determinant
- determinative
- early
- elder
- element
- etiology
- explorer
- factor
- first
- fore
- forebear
- forefather
- forerunner
- former
- frontiersman
- fugleman
- ground
- groundbreaker
- grounds
- guide
- harbinger
- heading
- herald
- inaugural
- innovator
- instrumentality
- leader
- leading
- means
- messenger
- occasion
- older
- pace
- past
- pathfinder
- pioneer
- point
- precedent
- precursor
- predecessor
- preliminary
- premise
- prime
- primogenitor
- principle
- prior
- progenitor
- propaedeutic
- prototype
- reason
- scout
- senior
- stimulus
- trailblazer
- vanguard
antecedent (adj.)
- anterior
- anticipatory
- ascendant
- avant-garde
- base
- chief
- determinant
- determinative
- earlier
- early
- elder
- first
- fore
- foregoing
- foremost
- former
- ground
- inaugural
- initiatory
- leading
- older
- past
- point
- precedent
- preceding
- precursory
- preexistent
- prefatory
- preliminary
- preparatory
- prevenient
- previous
- prime
- prior
- propaedeutic
- senior
