Noun change

Singular
shampoo

Plural
shampoos

  1. The plural form of shampoo; more than one (kind of) shampoo.

Verb change

Plain form
shampoo

Third-person singular
shampoos

Past tense
shampooed

Past participle
shampooed

Present participle
shampooing

  1. The third-person singular form of shampoo.