underrepresented
adj. B2 Upper Intermediate US //əndɝˌɹɛpɹɪˈzɛntɪd// UK //ˌʌndəɹˌɛpɹɪzˈɛntɪd// un·der·rep·re·sent·ed
adj. describing a group of people or things that are not shown or included in a way that is fair or equal to their actual size.
adj. not adequately reflected or included in a particular group, set, or population relative to their actual numbers or significance.
Women are still underrepresented in many high-level tech jobs.
The committee noticed that certain ethnic groups were underrepresented in the final selection of candidates for the new scholarship.
While the initial data suggested a balanced distribution, further analysis revealed that specific subpopulations were significantly underrepresented in the clinical trial results.