Translation guide
A clock that makes a sound at a set time to wake someone up or remind them of something.
The physical object or app that makes a sound to wake you up.
Standard word for an alarm clock. Literally 'wake-up clock'.
I forgot to set the alarm clock.
I bought a new alarm clock.
Short for 目覚まし時計. Very common in casual speech.
The alarm didn't go off.
Loanword from English. Often used for alarm functions on phones or digital devices.
I turned off the alarm on my smartphone.
Less common hybrid word. Understandable but not typical.
The alarm clock broke.
The sound itself or the act of setting an alarm.
Use セットする (setto suru) for setting an alarm. かける (kakeru) is also possible but less common for alarms.
to set an alarm
The direct transliteration アラームクロック is not used. Use 目覚まし時計 or アラーム instead.