If you describe something as ~, you mean that it has, or seems to have, no limits.
...an ~ capacity to imitate and adopt the new...
His advice was always sensible and his energy ~.
= boundless
ADJ
If you describe something as ~, you mean that it has, or seems to have, no limits.
...an ~ capacity to imitate and adopt the new...
His advice was always sensible and his energy ~.
= boundless
ADJ
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012