in- + patient

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1. having or showing a tendency to be quickly irritated or provoked:

〖be ～〗 〈人が〉気短で; 【行動･人などに】いらいらしている, 我慢できない «with, at»(↔ patient)

e.g. an impatient motorist blaring his horn

e.g. she was impatient with any restriction.

predicative (impatient of) intolerant of:

｟ややかたく｠ «…に» 耐えがたい «of»

e.g. a man impatient of bureaucracy.

2. restlessly eager:

〖be impatient for A〗 〈人が〉A〈ニュース･結果など〉を待ち遠しく思う

e.g. they are impatient for change

〖be ～ to do〗 〈人が〉しきりに…したがる(anxious); 〖be ～ for A to do〗 〈人が〉A〈人･物･事〉が…することを待ち望んでいる

e.g. with infinitive : he was impatient to be on his way.

late Middle English (in the senses ‘lacking patience’ and ‘unbearable’): via Old French from Latin impatient- ‘not bearing, impatient’, from in- ‘not’ + pati ‘suffer, bear’.