The word "telltales" can be defined as indicators or signs that give away information about something, often revealing a secret or hidden truth. Antonyms for this word could include "hidden," "concealed," "discreet," or "guarded," which describe situations where information is kept private or confidential. Another antonym could be "ambiguous," which refers to situations where the meaning is unclear or open to interpretation. "Unnoticed," "silent," or "inaudible" could also be antonyms for "telltales," as they describe circumstances where there are no obvious signs or indications. Overall, the antonyms for "telltales" all suggest a sense of secrecy or ambiguity, rather than openness or clarity.