Occidental
Oriental
accidental
coincidental
compartmental
continental
dental
departmental
detrimental
developmental
elemental
environmental
experimental
fundamental
gentle
governmental
incidental
incremental
instrumental
intercontinental
intergovernmental
judgemental
judgmental
lentil
mental
monumental
nongovernmental
occidental
oriental
ornamental
parental
regimental
rental
sentimental
supplemental
temperamental
transcendental
transcontinental
unsentimental