臨時取消 is not an idiom. CantoDict names this type of compound as “common formation”.
This one is specifically composed of “Adv + V”. In other words, we may as well add many different verbs behind 臨時 to form a “common formation”, e.g. 臨時決定, 臨時開工, 臨時上演, 臨時加餸, 臨時變卦, etc. In fact, the meaning of such compound can be easily deduced from the separate meanings of the two component parts.
Some editors would like to add “common formations” to CantoDict. I personally would try to avoid adding this type of compound as one addition could lead to many different ones of similar grammatical structure.
This one is specifically composed of “Adv + V”. In other words, we may as well add many different verbs behind 臨時 to form a “common formation”, e.g. 臨時決定, 臨時開工, 臨時上演, 臨時加餸, 臨時變卦, etc. In fact, the meaning of such compound can be easily deduced from the separate meanings of the two component parts.
Some editors would like to add “common formations” to CantoDict. I personally would try to avoid adding this type of compound as one addition could lead to many different ones of similar grammatical structure.