This is the 13613th most frequent Russian word.
недосягаем
"Unreachable" or "unattainable."
In this sentence, 'недосягаем' describes something physically unreachable, such as stars.
Звёзды на небе недосягаемы для человека.
Stars in the sky are unattainable for humans.
Here, 'недосягаем' conveys the idea of an ideal or ambition being challenging to achieve but inspirational.
Недосягаемая мечта вдохновляет нас на новые свершения.
An unattainable dream inspires us to achieve new things.
In this context, 'недосягаем' is used metaphorically to denote an extraordinary level of ability that's hard for others to match.