Concede: (verb) (A) to acknowledge as true or real, often unwillingly (B) to give; yield; grant
Deceased: (adj) No longer living; dead (noun) a dead person
Egress: (noun) A path or means of going out; an exit
Gradiation: (noun) A degree or stage in a series of gradual changes
Gradient: (noun) The degree to which something inclines; slope
Predecessor: (noun) someone or something that comes before another in time, especially in an office or position; forerunner
Regress: (verb) To go back; return to a previous condition
Secession: (noun) The act of withdrawing formally from membership in an organization, association, or union
Transgress: (verb) (A) to go beyond or over (a limit or boundary) (B) to act in violation of, as a law
Unprecedented: (adj) Not having occurred before; without precedent; novel