accident (n.)
- accessary
- accessory
- accidental
- addendum
- addition
- adjunct
- adventure
- appendage
- appurtenance
- auxiliary
- blow
- blunder
- calamity
- casualty
- cataclysm
- catastrophe
- chance
- collateral
- collision
- contingency
- contingent
- contretemps
- crack-up
- crash
- destiny
- disaster
- event
- eventuality
- extra
- fate
- fluke
- fortuity
- fortune
- grief
- hap
- happening
- happenstance
- hazard
- incidence
- incidental
- inessential
- kismet
- luck
- materialization
- misadventure
- mischance
- misfortune
- mishap
- mistake
- nonessential
- other
- pileup
- realization
- secondary
- serendipity
- shipwreck
- shock
- smash
- subsidiary
- supplement
- tragedy
- wreck
By many a happy accident.
To what happy accident is it that we owe so unexpected a visit?
I think it a very happy accident.
The accident of an accident.
