ともすれば

ともすれば means apt to (do); tend to; liable to; prone to ~. It is a JLPT N1 Japanese grammar pattern used to express that someone or something is naturally inclined toward a certain, usually undesirable, behavior or state.

This grammar point appears primarily in formal writing, essays, and critical commentary. If you want to describe an inherent tendency that leads to a negative outcome, ともすれば adds precise, sophisticated nuance to your Japanese.

What does ともすれば mean?

Use ともすれば when you want to express that a person, system, or situation is liable to, inclined to, or apt to end up in a particular state or action. The outcome is almost always undesirable — a mistake, excess, carelessness, or misjudgment.

Natural translations include:

• apt to (do); tend to; liable to; prone to ~

The best translation depends on the sentence. Try to feel the innate tendency before attaching a word. Often, “be apt to” or “be liable to” works better than a flat “tend to” because the nuance suggests a kind of latent weakness or predisposition.

How to form ともすれば

ともすれば is an adverbial phrase that sits before the verb or clause describing the tendency. It does not inflect, and it attaches directly to a full statement.

It can be used with verbs in dictionary form, potential form, passive form, or with negative predicates. The phrase itself remains unchanged.

Examples of the pattern:

• ともすれば忘れ(わすれ)がちになる
• ともすれば陥り(おちいり)やすい間違い(まちがい)
• ともすれば見過ごさ(みすごさ)れがちだ

Because ともすれば is a fixed adverbial, no conjugation is needed. However, the surrounding sentence must make clear what the inevitable tendency is. In JLPT questions, they might test whether you understand that ともすれば does not change form regardless of the following verb.

When is ともすれば used?

Use ともすれば in situations like:

• pointing out a human weakness or a systemic flaw
• warning that something naturally drifts toward an error
• analyzing why a mistake “easily” occurs, not due to a specific cause but due to the nature of things

Tone and register:

• formal, analytical, often used in essays, critiques, and academic writing
• rarely used in casual conversation; it would sound stiff or condescending
• appears in editorials, reviews, and JLPT N1 reading passages where the author diagnoses a general tendency

Because it suggests an inbuilt danger rather than a one-off accident, it implies a somewhat critical or resigned stance on the part of the speaker.

ともすれば example sentences

After reading each sentence, ask what job ともすれば is doing: it marks a general, almost natural drift toward an undesirable outcome. That makes the nuance easier to remember than a one-word translation.

Nuance of ともすれば

The key nuance is an inherent predisposition toward a negative result.

This matters because learners often translate it as simply “tend to,” but ともすれば carries a stronger sense of inevitability rooted in character, structure, or human nature. It is not about a person’s habitual preference but about a built-in vulnerability.

For example:

• If your system is complex, ともすれば bugs appear — not because programmers are lazy, but because complexity makes it almost inevitable.
• A very busy schedule is ともすれば health-neglecting — the drift is part of the situation itself.

Because the speaker is diagnosing an underlying flaw, the tone can sound slightly critical or wise. Using this pattern makes your statement feel like an observation about the world, not just a personal opinion.

ともすれば vs ともすると

Both ともすれば and ともすると express the exact same meaning: “apt to; liable to.” They are interchangeable in every respect. The difference is purely stylistic and historical.

Both forms use the same grammatical structure: the conditional すれば vs すると attached to the auxiliary verb とも (even if; even though). Historically, ともすると appeared earlier, and modern language settled on ともすれば as the more common written form. In JLPT exams, you will almost certainly see ともすれば.

If you encounter ともすると in reading, treat it identically. There is no nuance difference worth worrying about. For production, stick with ともすれば.

Common mistakes with ともすれば

A helpful practice method is to take a simple tendency (“I tend to forget things”) and recast it using ともすれば with appropriate vocabulary: ともすれば忘れ(わすれ)がちになる. Then rewrite it with どうしても or とかく to feel the nuance shift.

Is ともすれば on the JLPT?

For test preparation, study ともすれば in full sentences that combine it with がち, やすい, or かねない. JLPT N1 reading often contains a string of such patterns to build a critical argument, so knowing the nuance lets you follow the author’s judgment.

Practice questions for ともすれば

Keep your first sentences simple. Once the structure feels natural, layer in a second clause that shows the consequence of that tendency.

Learning path for ともすれば

Related grammar to review next

• ともあろうものが — because it uses とも to frame the subject as highly unsuitable; a sharp contrast to the tendency nuance of ともすれば
• ともなく・ともなしに — because it shows another fixed とも construction for undirected actions; good for comparing how とも + conditional vs. とも + negative work
• ともとも — because this rare pattern also uses repeated とも to express “both” or “either way” in formal argumentation
• とりわけ — because it shares the function of singling out something that easily happens or stands out; useful for describing tendencies alongside ともすれば

Learn ともすれば with Hane

If you want to review ともすれば together with these nuanced N1 patterns, Hane helps you practice Japanese in short, focused sessions.

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