The word tactile is an adjective. Adjectives do not have plurals.
The plural form of quiz is quizzes.
The plural form for the noun index is indexes.
Plural of zero is zeroes.
Chests is the plural of chest.
The plural of colt is colts
Italy does not have a plural form.
The plural form of him, her, or it is them. (objective pronouns)
The plural form of beauty is beauties.
The plural form is spelt : subpoenas.
The plural form of radius is radii.
The plural form of quiz is quizzes.
Trout is plural
The plural form of the noun 'sea' is seas.
The plural form for the noun coach is coaches.
The plural form for the noun index is indexes.
The plural form of "atlas" is "atlases."
The plural of "burrito" is "burritos".