diminutive - small
Somebody or something ‘diminutive’ is notably below average in size, particularly with regards to height. This word is most commonly encountered in written English, especially in literature and print media, as a formal and non-offensive description of a person’s miniature or undersized stature.
Lee is quite a diminutive figure. I would estimate that he is not much more than five-foot-tall.
The diminutiveness of the facility surprised me. I couldn’t believe that such a prominent organization could operate out of so small a space.
Due to age and injuries, Lisa is no longer regarded as the best player in the team, and she seems to be struggling to come to terms with the diminution of her reputation.