approbation

approbations

bioturbation

bioturbations

conglobation

conglobations

conurbation

conurbations

disapprobation

disapprobations

exacerbation

exacerbations

incubation

incubations

intubation

intubations

libation

libationary

libations

lobation

lobations

masturbation

masturbations

perturbation

perturbational

perturbations

probation

probational

probationally

probationary

probationer

probationers

probations

reprobation

reprobations