indiscretion

n. lack of caution; lack of circumspection; lack of prudence; tactlessness; unwise or heedless action

"Indiscretion" is an episode of Star Trek: Deep Space Nine, the fifth episode of the fourth season. It introduces the character Tora Ziyal, the half-Bajoran daughter of Gul Dukat, and marks the first appearance of the Breen.
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Noun
1. the trait of being injudicious
(synonym) injudiciousness
(hypernym) folly, foolishness, unwiseness
2. a petty misdeed
(synonym) peccadillo
(hypernym) misbehavior, misbehaviour, misdeed

n. indiscretion

(n.)
The quality or state of being indiscreet; want of discretion; imprudence.
  

(n.)
An indiscreet act; indiscreet behavior.