revealing

nouns

the speech act of making something evident
is derived from

adjectives

disclosing unintentionally
"a telling smile"; "a telltale panel of lights"; "a telltale patch of oil on the water marked where the boat went down"
showing or making known
"her dress was scanty and revealing"
antonym
is similar to
(usually followed by `of') pointing out or revealing clearly
"actions indicative of fear"