World War I

:  the earthly state of human existence

:  the earth with its inhabitants and all things upon it

:  individual course of life :  career

:  of or relating to the world

:  extending or found throughout the world :  worldwide

:  involving or applying to part of or the whole world

:  a state of usually open and declared armed hostile conflict between states or nations

:  a period of such armed conflict

:  state of war

:  to be in active or vigorous conflict

:  to engage in warfare

:  worse

:  worst, overcome

:  the 9th letter of the English alphabet

:  a graphic representation of this letter

:  a speech counterpart of orthographic i

: industrial

: initial

: intelligence

: imaginary unit