Origin of alacka(h) + lack
The definition of alack is a word used to express sorrow or regret.
An example of a time that someone might use the word alack is when he is expressing regret for letting the girl of his dreams get away.
Used to express sorrow, regret, or alarm: “Whatever I long for makes me cry alack. / Whatever I wish, I quickly take it back” ( Richard Wilbur )
Origin of alackOn the model of alas ; see lack .