In official documents, scientific reports, or formal business communications, Russian uses a highly formal set of indefinite pronouns and adverbs.
The Formal Suffix "-либо"
To express "any," "anything," or "anywhere," attach the hyphenated suffix -либо to question words like какой, где, кто, or что. This serves the same function as the everyday suffix -нибудь, but in a highly formal, professional tone.
Only the first part of the word declines to match the noun it modifies or its grammatical role, while the -либо suffix remains unchanged. For example, with какой-либо (any / some kind of):
| In aquaculture, finding any cheap method is a complex task. | В аквакультуре найти какой-либо дешёвый способ — это сложная задача. |
Notice how какой declines to the Genitive какого after the preposition без (without), while -либо stays exactly the same:
| Without any feed, the fry will die. | Без какого-либо корма мальки погибнут. |
Adding the suffix to где (where) creates the adverb где-либо (anywhere). As an adverb, it never changes form.
| It is unlikely that you will find a similar body of water anywhere. | Вряд ли вы где-либо найдёте похожий водоём. |
"Кто-либо" and "Что-либо"
Applying this suffix to кто (who) and что (what) forms кто-либо (anyone) and что-либо (anything). Like какой-либо, the first half of the word declines exactly like the standalone pronouns кто or что. They are often used in formal conditional statements discussing potential outcomes or risks.
| If anyone buys this feed, we will make a profit. | Если кто-либо купит этот корм, мы получим прибыль. |
| If anything happens to the fry, we will lose profit. | Если с мальками что-либо случится, мы потеряем прибыль. |
| If you know anything about sturgeon breeding, aquaculture is a profitable business. | Если вы знаете что-либо о разведении осетра, аквакультура — это выгодный бизнес. |
