a.
1.
Perpetual, uninterrupted, unceasing, incessant, unremitting, constant, continuous.
2.
Perpetual, endless, everlasting, eternal, permanent, unending, interminable.
3.
Oft-repeated, very frequent, perpetual, constant, constantly recurring.
a.
1.
Perpetual, uninterrupted, unceasing, incessant, unremitting, constant, continuous.
2.
Perpetual, endless, everlasting, eternal, permanent, unending, interminable.
3.
Oft-repeated, very frequent, perpetual, constant, constantly recurring.
Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012