неофициальном

неофициальном

"Informal" or "unofficial."

Here, 'неофициальном' (unofficial) describes a meeting that is conducted in an informal or unofficial capacity, indicating a relaxed or non-formal character.

Я присутствовал на неофициальном собрании коллектива.

I attended an informal meeting of the team.

In this sentence, 'неофициальном' characterizes the tone as informal, implying a conversational and casual manner of speaking.

В неофициальном тоне он объяснил свою точку зрения.

In an informal tone, he explained his point of view.

The term 'неофициальном' is used here to describe the manner in which information was acquired, suggesting it was done outside formal or standard protocols.

Эти сведения были получены в неофициальном порядке.

This information was obtained in an unofficial manner.