shoot from the hip
一時期おとなしくなったトランプ氏でありましたが，以前よりも言動が激しくなっているようです。
After period of discipline, Trump turns more aggressive
Once again, the more disciplined Donald Trump is giving way to the Twitter-wielding Donald Trump.
After a stretch of more low-key campaigning, Trump is spending the weekend under fire for comments about Hillary Clinton that seem to invite violence against her, fighting with the media, and engaged in a dispute with a former Republican defense secretary — all on top of a revival of the "birther" issue involving President Obama.
Gates, appointed to the Pentagon by President George W. Bush and retained by Obama, criticized both Trump and Clinton in a Wall Street Journal op-ed on challenges facing the next commander-in-chief. But while Clinton has "credibility issues," Gates wrote that Trump is in a "league of his own" and is unqualified for the job.
“He has no clue about the difference between negotiating a business deal and negotiating with sovereign nations,” Gates wrote. “A thin-skinned, temperamental, shoot-from-the-hip and lip, uninformed commander-in-chief is too great a risk for America.”
今回取り上げる表現は，“shoot from the hip”です。そのまま直訳すると，「お尻から撃つ」となりますが，当然このような意味ではありません。これは，「状況にすばやく反応する」や「すばやく意見を述べる」（『ジーニアス英和辞典』大修館書店）という意味になります。
さらに，Merriam-Websterを見てみると，“to act or speak hastily without consideration of the consequences”とあり，先の結果を考えずに意見を述べたり，行動したりするニュアンスが含まれているようですね。記事では，ハイフンを使い，形容詞の用法として用いられています。
また，“shoot-from-the-hip”の後に“and lip”と続いています。“lip”を付け加えることで，トランプ氏の出まかせ発言を強調し，皮肉が込められているように感じます。(Nao)
