extra (n.)
- above
- accessory
- accident
- accidental
- addendum
- addition
- adjunct
- altogether
- appendage
- appurtenance
- auxiliary
- balance
- beyond
- bonus
- collateral
- contingency
- contingent
- daily
- decoration
- dividend
- excess
- filigree
- filling
- fillip
- flourish
- frill
- gazette
- gratuity
- happenstance
- incidental
- inessential
- item
- kicker
- lagniappe
- leftover
- margin
- mint
- more
- mute
- new
- news
- newspaper
- nonessential
- odd
- off
- original
- ornament
- other
- over
- overage
- overplus
- overrun
- oversupply
- padding
- paper
- plus
- pourboire
- premium
- rag
- remainder
- reserve
- secondary
- sheet
- side
- spare
- special
- stand-in
- standby
- stuffing
- subsidiary
- substitute
- super
- supernumerary
- supplement
- support
- surcharge
- surplus
- surplusage
- tabloid
- then
- tip
- too
- trimming
- twist
- understudy
- unemployed
- very
- walk-on
- weekly
- wrinkle
- yet
extra (adv.)
- above
- additionally
- again
- also
- altogether
- amazingly
- another
- besides
- beyond
- considerably
- daily
- else
- especially
- exceptionally
- extraordinarily
- extremely
- farther
- fresh
- further
- furthermore
- item
- likewise
- markedly
- more
- moreover
- new
- notably
- noticeably
- off
- other
- over
- paper
- part-time
- particularly
- rarely
- remarkably
- side
- similarly
- strikingly
- super
- surprisingly
- then
- therewith
- too
- uncommonly
- unexpectedly
- unusually
- very
- weekly
- yet
extra (adj.)
- above
- accessory
- accidental
- added
- additional
- adjunct
- adscititious
- adventitious
- again
- altogether
- ancillary
- another
- appurtenant
- auxiliary
- casual
- circumstantial
- collateral
- contingent
- contributory
- daily
- excess
- farther
- fortuitous
- fresh
- further
- incidental
- inessential
- item
- leftover
- mint
- more
- mute
- new
- nonessential
- occasional
- odd
- off
- original
- other
- out-of-the-way
- over
- overage
- part-time
- plus
- premium
- pristine
- rag
- remaining
- saved
- secondary
- side
- spare
- special
- standby
- subsidiary
- substitute
- super
- superfluous
- supernumerary
- supplemental
- supplementary
- support
- surplus
- suspended
- then
- ulterior
- unbeaten
- uncommon
- unconsumed
- unemployed
- unessential
- unexpended
- unspent
- untapped
- untouched
- untrodden
- unused
- very
- walk-on
- weekly