Synonyms of unsparing in English:

unsparing


See US English definition of unsparing

See UK English definition of unsparing

See Spanish definition of implacable

adjective

1‘an unsparing analysis of the way the two parties collude to stay in power’

SYNONYMS
merciless, pitiless, unpitying, ruthless, relentless, remorseless, unmerciful, unforgiving, implacable, uncompromising
stern, strict, severe, stringent, harsh, tough, rigorous, exacting, demanding, inflexible, draconian
Australian, New Zealand informal solid
ANTONYMS

merciful, gentle, mild

2‘she had won her mother's unsparing approval’

SYNONYMS
ungrudging, unstinting, willingly given, free, free-handed, ready, beneficent, benevolent, big-hearted, kind-hearted, kind, unselfish
lavish, liberal, generous, magnanimous, open-handed, munificent, bountiful
profuse, abundant
literary bounteous, plenteous
ANTONYMS

grudging