Wiktionary
understudied
Insufficiently study. v
(en-past of: understudy)
WordNet
understudied
See understudy
understudy
n. an actor able to replace a regular performer when required [syn: standby]
v. be an understudy or alternate for a role [syn: alternate]
[also: understudied]
Usage examples of "understudied".
As it turned out, however, Herr Sturm most obligingly understudied for me.