संस्‍कृतशब्‍दकोशः

निरवकाश

अवकाश रहित, पूर्णतः, उद्युक्त

having no space to move about, without leisure, fully engaged

Monier–Williams

निरवकाश — {avakāśa} mf({ā})n. wanting room, crowded (said of a hell)##out of place or time, unseasonable, inconvenient##{-tā} f.##{śī-} √{kṛ}, to remove from its place ix, 28 (C.)