revealing in WordNet English dictionary

1. the speech act of making something evident
   disclosure  revelation  revealing 
   

1. showing or making known
   "her dress was scanty and revealing"
   revealing 
   
2. disclosing unintentionally
   "a telling smile"; "a telltale panel of lights"; "a telltale patch of oil on the water marked where the boat went down"
   revealing  telling  telltale