Definition of "understudied" []

• Insufficiently studied. (adjective)
• Simple past tense and past participle of understudy. (verb)

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• "Of course, all the important parts in a play are "understudied"; that is, some other actor or actress than the principal has learned the lines and "business" so, in case the latter is taken ill, the play can go on, after a fashion."
• "In addition, research should include "understudied" diseases, such as lupus and epilepsy, and examine the effects of exercises that are perhaps not as widely used, such as resistant training, they say."
• "Youth report sexual solicitation of minors by minors more frequently, but these incidents, too, are understudied, underreported to law enforcement, and not part of most conversations about online safety."