Describes a state where emotions are openly and intensely displayed, often without restraint. Can be used positively or negatively depending on context.
むき出し alone means 'bare' or 'exposed' and can be used for physical objects (e.g., 肌をむき出しにする). 感情むき出し specifically applies this to emotions.
Etymology
Compound of 感情 (emotion) and むき出し (bare, exposed). The word むき出し is from the verb 剥く (to peel) in its continuative form 剥き plus 出し (from 出す), literally 'peeled and put out'.
