This is the 13750th most frequent Russian word.
неудобно
Uncomfortable; awkward; inconvenient.
Here, 'неудобно' expresses a personal discomfort or unease.
Мне неудобно говорить об этом.
I feel uncomfortable talking about this.
In this context, 'неудобный' describes a physical feature, referring to discomfort in using the chair.
Этот стул слишком неудобный.
This chair is too uncomfortable.
Here, 'неудобно' indicates a sense of social discomfort or embarrassment.