impulsive (highly reactive; about people who react quickly or feel emotional), spontaneous (arising from a momentary impulse) · impulsive (impetuous), impetuous
çekim: karşılaştırma impulzivnější · üstünlük nejimpulzivnější
çekim: karşılaştırma hirtelenebb · üstünlük leghirtelenebb
köken: From hír (“news”) + -telen (“-less, without”, privative adjective-forming suffix), referring to the fact that events may happen without prior notice or news.
sudden, unexpected · hasty, quick · precipitate (with a hasty impulse), rash, snap (done quickly and unexpectedly), abrupt (without notice)
çekim: karşılaştırma tobainne · üstünlük is tobainne
köken: Alteration of earlier obann, from Middle Irish opund (“quick, sudden”), from Proto-Celtic *od-bond, of uncertain origin: * Possibly from the root of bonn (“foundation”). * According to Stokes, cognate with Old Church Slavonic абиѥ (abije, “immediately, at once”), Ancient Greek ἄφαρ (áphar, “at once”), ἄφνω (áphnō, “suddenly”). * Possibly instead related to Welsh buan (“swift, rapid”), from…