らむ

Probably (Classical)

Level 6Sounds Like ramu

らむ is a classical Japanese auxiliary verb used to express 'probably' or 'must be' regarding the present moment. It is most often used for things the speaker cannot see or to wonder about the reason for something they can see.

How It Works

らむ (often written as らん in later periods due to a phonetic shift called 撥音化（はつおんか）) has three primary functions:

1. Present Conjecture (現在推量): Guessing about an action happening right now that is out of sight. This usage typically appears at the end of a sentence (文末).
Example: 子泣くらむ ("My children are probably crying (at home).")

2. Reason/Cause Conjecture (原因推量): When the speaker sees a fact in sight but wonders why or how (the hidden circumstances) it is happening. This is very common in classical poetry (Waka) and is often accompanied by interrogative words (such as など or いかに). This usage also typically appears at the end of a sentence (文末).
Example: などほととぎす声絶えぬらむ ("Why has the cuckoo's voice ceased?")

3. Hearsay/Euphemism (伝聞・婉曲): Softening a statement or indicating that one has heard something is the case. Unlike the other two functions, this function appears mid-sentence (文中) when らむ is in the Attributive Form（連体形（れんたいけい）） modifying a noun.
Example: 人の言ふらむことを... ("the things that people supposedly say...")

Conjugation Rules:

  • Attaches to the Terminal Form（終止形（しゅうしけい）） of most verbs.
  • Exception: For ラ変（らへん） (r-irregular) verbs (like あり) and words that conjugate like them (adjectives in the -かり form), it attaches to the Attributive Form（連体形（れんたいけい））.

Conjugation of らむ:
〇 / 〇 / らむ / らむ / らめ / 〇 (四段型)

Identification (識別（しきべつ）):
It is crucial to distinguish the present conjecture auxiliary らむ from other similar-looking combinations. While looking at the vowel sound immediately preceding the 'ら' character is a common trick, it is not foolproof:

  • う段（うだん） + らむ: Usually the Present Conjecture auxiliary らむ.
  • え段（えだん） + らむ: Usually the Perfective auxiliary り (in its Irrealis Form（未然形（みぜんけい）） 'ら') + Future Conjecture auxiliary む.
  • あ/い/お段（あ/い/おだん） + らむ: Usually the Irrealis Form（未然形（みぜんけい）） of Ra-row verbs, adjectives, and certain auxiliaries (which end in 'ら') + Future Conjecture auxiliary む.

Important Note: This vowel trick breaks down for ラ行 (Ra-row) verbs whose stems end in an 'u' or 'e' sound (e.g., 降る（ふる）, 帰る（かえる）). The only foolproof way to identify them is by looking at the conjugation form of the preceding word. If the preceding word is in the Terminal Form (or Attributive Form for ラ変), it is the auxiliary らむ. If it is in the Irrealis Form（未然形（みぜんけい））, it is the verb stem + む.

Examples (3)

  1. 故郷には、今ごろ雪降るらむ。

    In my hometown, it is probably snowing about now.

    Word by Word: Hometown in, now-about snow fall-probably.

    This is a classic example of Present Conjecture. The speaker is not in their hometown, so they are imagining the current state there.

  2. 久方の光のどけき春の日にしづ心なく花の散るらむ。

    On this spring day of tranquil light, why do the cherry blossoms scatter with such restless hearts?

    Word by Word: Tranquil light spring day on, without-quiet-heart flowers fall-probably.

    From the Hyakunin Isshu. Here, らむ is used for Reason Conjecture. The poet sees the flowers falling and wonders why they are so restless.

  3. 都の人も、この月を見るらむ。

    The people in the capital are likely looking at this moon too.

    Word by Word: Capital people also, this moon see-probably.

    The speaker is looking at something (like the moon) and conjectures that people in a distant location are looking at the same thing at this very moment.

Common Mistakes

  • Using らむ for future events.

    明日も雨降るらむ。
    明日も雨降らむ。

    らむ is strictly for the present. For future conjecture ('It will probably rain tomorrow'), the simple auxiliary む should be used.

  • Translating it as a simple factual statement.

    花の散るらむ (The flowers fall).
    花の散るらむ (The flowers must be falling / Why do the flowers fall?).

    Learners often ignore the 'conjecture' part. らむ adds a layer of 'I wonder' or 'probably' that is essential to the meaning.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

らむLevel 6Probably (Classical)

Learn This First

らむ is a classical Japanese auxiliary verb used to express conjecture about a present state or a reason. To understand it, learners should be familiar with basic verb concepts and the general idea of expressing probability (like modern だろう). Since it is a classical form, exposure to other classical markers like けり provides necessary context for how these suffixes attach to verbs.