achtmal
eight times
Expresses the eightfold repetition of a process or action.
Ich habe dich heute schon achtmal angerufen!
I've already called you eight times today!

eight times
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eight times
Expresses the eightfold repetition of a process or action.
Ich habe dich heute schon achtmal angerufen!
I've already called you eight times today!

'Achtmal' (eight times) is a numeral adverb made up of the number 'acht' (eight) and the noun 'Mal' (time/instance). This pattern is very productive: 'einmal' (once), 'zweimal' (twice), 'dreimal' (three times), etc.
Man muss den Code dreimal falsch eingeben, bevor die Karte gesperrt wird.
You have to enter the code incorrectly three times before the card is blocked.
As an adverb indicating repetition or multiplication, 'achtmal' (eight times) is always written in lowercase and as one word. It is only written separately and capitalized when referring to a countable instance, e.g. 'das achte Mal' (the eighth time).
Ich habe es dir jetzt achtmal erklärt.
I've explained it to you eight times now.
For comparisons and multiplication, the fixed structure 'achtmal so [Adjektiv] wie ...' (eight times as [adjective] as ...) is used. This construction is very common.
Der neue Prozessor ist fast achtmal so schnell wie der alte.
The new processor is almost eight times as fast as the old one.