The adjective suffix -sa does not exist as a standard English suffix. However, it appears in several other languages, notably Japanese, where it forms nouns from adjectives (e.g., takasa “height” from takai “high”), and in Latin-derived scientific terms where it is part of the stem. This article explains the most common uses of -sa across languages, focusing on Japanese, and clarifies why English learners might encounter it.
Background: Where Does -sa Appear?
The suffix -sa is most productive in Japanese, where it is a nominalizing suffix attached to adjectives to create abstract nouns. For example, nagasa (length) comes from nagai (long). In English, -sa is not a suffix; words ending in -sa (like “sauna” or “salsa”) are either loanwords or have the -sa as part of the root. In Latin, the suffix -sa appears in feminine forms of past participles (e.g., missa “sent”), but this is not an adjective-forming suffix. In Japanese, the suffix is a key part of grammar, and understanding it is essential for learners.
How -sa Works in Japanese
In Japanese, -sa is attached to the stem of an adjective to turn it into a noun. For i-adjectives (ending in -i), remove the final -i and add -sa. For na-adjectives (ending in -na), remove the -na and add -sa. The resulting noun expresses the degree or quality of the adjective.
- i-adjectives: takai (high) → takasa (height); nagai (long) → nagasa (length)
- na-adjectives: shizuka-na (quiet) → shizukasa (quietness); kirei-na (pretty) → kireisa (prettiness, though less common)
This suffix is similar to English “-ness” (e.g., “happiness”) or “-th” (e.g., “length”). It is used in both concrete measurements (like height) and abstract qualities (like quietness).
Examples of -sa in Japanese Sentences
To see -sa in action, consider these common expressions:
- Kono tatemono no takasa wa 100 meetoru desu. (The height of this building is 100 meters.)
- Kawa no nagasa wa 300 kiro desu. (The length of the river is 300 kilometers.)
- Kono heya no hiro-sa wa juu-tatami desu. (The size of this room is ten tatami mats.)
- Ano ko no genki-sa ni wa odorokimasu. (I am surprised by that child’s energy.)
Note that -sa can also be used to ask about degree: takasa wa dono kurai desu ka? (How tall is it? Literally: About how much height?).
How to Choose Between -sa and Other Suffixes
Japanese has several suffixes that create nouns from adjectives, and choosing the right one can be tricky. The most common are -sa, -mi, and -ke.
- -sa indicates a measurable degree or objective quality. It is the default choice for most adjectives.
- -mi indicates a subjective, often emotional quality or a flavor. For example, amami (sweetness) from amai (sweet) refers to the taste, not a measurable sugar content.
- -ke indicates a tendency or atmosphere. For example, natsu-ke (summer-like feeling) from natsu (summer), though this is less common and often used with nouns.
In practice, -sa is the safest choice for most adjectives. For example, omosa (weight) is measurable, while omomi (gravity, significance) is abstract.
Common Mistakes and Misconceptions
One common mistake is confusing -sa with the suffix -saa, which is a colloquial lengthening of -sa used in some dialects (like Kansai) to add emphasis, similar to “you know” in English. Another misconception is that -sa can be used with all adjectives; while it works with most, some adjectives have irregular forms. For instance, yoi (good) becomes yosa (goodness), not yosa from yoi (which is correct), but ii (also “good”) is not used with -sa; instead, yosa is used. Also, some adjectives like kirei (pretty) rarely use -sa because the noun kirei already exists as a na-adjective; you would say kirei-sa but it sounds awkward. In such cases, use a different noun like utsukushisa (beauty) from utsukushii (beautiful).
Comparison with English Suffixes
English has no single equivalent to -sa. The closest are -ness (happiness), -th (length), -ity (serenity), and -dom (freedom). Japanese -sa is more regular than English suffixes, which often have unpredictable forms. For example, English “good” becomes “goodness,” but “bad” becomes “badness,” not “badth.” In Japanese, yosa and warusa are regular. This regularity makes -sa easier for learners.
Safety and Accuracy in Usage
When using -sa in Japanese, it is important to be aware of politeness levels. In casual speech, you might say takasa directly, but in formal contexts, you might use takasa ni tsuite (regarding the height). There is no danger in using -sa itself, but misusing it can cause confusion. For example, saying kirei-sa might be understood but sounds odd; instead, use utsukushisa. Always check a dictionary if unsure.
Frequently Asked Questions
What does -sa mean in Japanese?
-sa is a suffix that turns adjectives into nouns, indicating a degree or quality. For example, takasa means “height” and comes from takai (high). It is similar to English “-ness” or “-th.”
Is -sa used in English?
No, -sa is not an English suffix. English words ending in -sa, like “salsa” or “sauna,” are loanwords or have the -sa as part of the root. If you see -sa in an English word, it is not a suffix.
How do I form nouns with -sa?
For i-adjectives, drop the final -i and add -sa. For na-adjectives, drop the -na and add -sa. For example, omoi (heavy) → omosa (weight); benri-na (convenient) → benrisa (convenience, though less common).
Can -sa be used with any adjective?
Most adjectives can take -sa, but some have irregular forms or are rarely used. For example, ii (good) does not take -sa; instead, use yosa from yoi. Some na-adjectives like kirei sound awkward with -sa; use a synonym instead.
What is the difference between -sa and -mi?
-sa indicates a measurable, objective degree, while -mi indicates a subjective, emotional quality or flavor. For example, amami (sweetness) refers to the taste, while amasa would refer to a measurable sweetness level. In practice, -sa is more common.
Is -sa used in other languages?
Yes, -sa appears in some other languages. In Latin, it is a feminine ending of past participles (e.g., missa), but not an adjective suffix. In some Slavic languages, -sa is a diminutive or feminine suffix, but not for adjectives. In Japanese, it is the primary nominalizing suffix for adjectives.
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