lowercase
adjectiveUK /ˌləʊ.əˈkeɪs/
US /ˌloʊ.ɚˈkeɪs/
Lowercase letters are the small letters, like a, b, and c.
Please write your name in lowercase letters.
OTHER MEANINGS
2. The set of small letters used in writing.
The password must contain both uppercase and lowercase.
3. To change text so that all letters are small.
Lowercase the title before saving the file.
4. Printed or written in small letters rather than capitals.
The logo uses a lowercase font.