the formal act of acquiring something (especially territory) by conquest or occupation; "the French annexation of Madagascar as a colony in 1896"; "a protectorate has frequently been a first step to annexation"
a person motivated by irrational enthusiasm (as for a cause); "A fanatic is one who can't change his mind and won't change the subject"--Winston Churchill
marked by excessive enthusiasm for and intense devotion to a cause or idea; "rabid isolationist"