Elimination

4 clues
Eradication
Type of contest
Kind of contest
Part 6 of the quip
Similar answers:
Abomination
Acrossthenation
Adestination
Africannation
Africannations
Agelimit
Agelimits
Aggressornation
Alienation
Aliennation
Alternation
Anation
Anexaminationof
Antagoniststagnation
Antinationalist
Arenations
Assassination
Assignation
Augustanational
Backexamination