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'.
目覚まし時計をセットするのを忘れた。
I forgot to set the alarm clock.
新しい目覚まし時計を買った。
I bought a new alarm clock.
Short for 目覚まし時計. Very common in casual speech.
目覚ましが鳴らなかった。
The alarm didn't go off.
Loanword from English. Often used for alarm functions on phones or digital devices.
スマホのアラームを止めた。
I turned off the alarm on my smartphone.
Less common hybrid word. Understandable but not typical.
アラーム時計が壊れた。
The alarm clock broke.
The sound itself or the act of setting an alarm.
Refers to the alarm sound or function, especially on electronic devices.
アラームがうるさい。
The alarm is annoying.
Literally 'sound of the alarm clock'. Used when talking about the specific tone.
目覚ましの音で起きた。
I woke up to the sound of the alarm clock.
Use セットする (setto suru) for setting an alarm. かける (kakeru) is also possible but less common for alarms.
アラームをセットする
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.