Translation guide
A person who observes an online community without actively participating. Japanese has several terms for this, ranging from neutral to slightly negative.
To describe someone who reads but doesn't post in forums, social media, or chat groups.
Abbreviation of 'Read Only Member'. Very common in Japanese online culture. Neutral and widely understood.
彼は長年ROMで、一度も書き込んだことがない。
He's been a lurker for years and has never posted even once.
Literally 'read-only'. Casual and common, especially on social media like Twitter.
Twitterでは読み専で、ほとんどツイートしない。
I'm a lurker on Twitter and hardly ever tweet.
Literally 'view-only'. Similar to 読み専 but emphasizes watching videos or streams rather than reading.
YouTubeは見る専で、コメントはしない。
I just lurk on YouTube and don't comment.
Verb form meaning 'to lurk'. Slangy, derived from ROM. Used in casual online contexts.
しばらくROMって様子を見よう。
Let's lurk for a while and see how things go.
To imply someone is watching silently in a creepy or obsessive way.
Direct loanword for 'stalker'. Stronger than 'lurker' and implies unwanted following or monitoring.
Much stronger than English 'lurker'. Use only when stalking behavior is implied.
ネットストーカーに居場所を知られた。
An online lurker/stalker found out where I live.
Literally 'observer/monitor'. Can be used for someone who watches online activity obsessively, but is more formal and less common for casual lurking.
彼はまるで監視者のように、私の投稿を全部チェックしている。
He checks all my posts like some kind of lurker/monitor.
To describe someone who hides or waits in a place, often with bad intentions.
From the verb 潜む (to lurk/hide). Describes someone hiding in a physical location.
暗がりに潜む人がいて怖かった。
There was a lurker in the shadows and it was scary.
Means 'suspicious person'. Often used for someone lurking around with unclear intentions.
夜中に家の周りをうろつく不審者がいた。
There was a lurker/suspicious person prowling around the house at night.
ROM is the most established term for online lurkers, especially in forums and BBS. 読み専 is common on text-heavy platforms like Twitter. 見る専 is used for video/streaming platforms. All are neutral, but ROM can sometimes carry a slightly negative nuance of not contributing.
Direct translations like 潜む人 are only for physical hiding. For online contexts, use ROM or 読み専. Using 潜む人 for an internet lurker would sound like a stalker hiding in the bushes.