ad·um·brate 
(ădəm-brāt′, ə-dŭm-)
(ădəm-brāt′, ə-dŭm-)tr.v. ad·um·brat·ed, ad·um·brat·ing, ad·um·brates
1. To give a sketchy outline of.
2. To prefigure indistinctly; foreshadow.
3. To disclose partially or guardedly.
4. To overshadow; shadow or obscure.
[Latin adumbrāre, adumbrāt-, to represent in outline : ad-, ad- + umbra, shadow.]
ad′um·bration n.
ad·umbra·tive (ə-dŭmbrə-tĭv) adj.
ad·umbra·tive·ly adv.