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Jyutping fong3 hung1
Pinyin fàng kōng

Definitions (粵典–words.hk)
  1. 動詞
    唔​諗​任何​嘢​,​放​鬆​休息
    to relax and clear mind; to be idle
  2. 近義詞
    冥想、發吽哣、發呆
Definitions (Wiktionary)
  1. verb
    to relax one's mind; to completely relax
  2. verb, Hokkien, Mainland-China
    to boast; to brag
    (syn.) 表功, 吹水, 𬅫鸡胲, 白话, 夸喙, 練扇空, 夸耀, 吹嘘, 讲空, 化仙, 誇, 說大話, 拉𰵩, 鼓吹, 膨风, 誇口, 吹牛三, 矜人, 自夸, 相空, 歕雞胲, 歕雞胿, 好臉, 自矜, 夸口, 講嘐潲話, 嗙鸡胲, 車大炮, 吹噓, 放臭屁, 自詡, 講空, 拉誧, 風龜, 练扇空, 说大话, 白話, 嗙雞胲, 膨風, 誇喙, 风龟, 放風球, 𬅫鸡胿, 放风球, 讲嘐潲话, 呾卵话, 夸, 吹牛屄, 放风龟, 放風龜, 嗙虎膦, 呾卵話, 车大炮, 好脸, 誇耀, 自诩, 自誇, 吹牛皮, 拉空, 吹牛
  3. verb, Hokkien, Mainland-China
    to present a bold front to conceal a weak defense
    (syn.) 空城計, 空城计, 放空營, 放空城, 放空营
  4. verb
    to miss the target
  5. verb, of a taxi, usually
    to travel empty (without passenger or cargo); to deadhead
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Definitions (兩岸三地生活差異詞語彙編—Two Shores Three Places)
  1. 臺陸用法和差異
    「​放空​」​通常​多​用於​形容​一種​甚麼​也​不​做​、​不想​的​放鬆​狀態​,​如​:​這個​計畫​結束​後​我​要​出國​去​放空​一下​,​好好​休息​。​另外​也​經常​用於​商業​中​,​是​一個​股票​術語​,​指當​投資人​認為​某個​股票​會​下跌​,​但​手邊​沒有​該​股票​時​,​先​向​證券商​借該​股票​賣出​,​待​股價​真的​下跌​時​,​再​買入​低價​的​股票​,​還給​證券商​。​
    ​在​大陸​,​「​放空​」​一詞則​用以​形容​船​或​車輛​,​不​載運​貨物​或​客人​,​空著​行駛​,​例如​:​這條​公車​路線​規劃​不當​,​搭載​率太低​,​來回​車輛​幾乎​都​放空​行駛​。

放空 [--]

Jyutping
Pinyin fàng kōng

Definitions (CC-CEDICT)
  1. to relax completely
  2. to empty one's mind
  3. (finance) to sell short
  4. (of a commercial vehicle) to travel empty (no cargo or passengers)
  5. to deadhead