责任，义务,
Merriam-Webster Online Dictionary
onus (noun)1.
Latin
a) - burden
b) a disagreeable necessity - obligation
c) - blame
d) - stigma
2.
New Latin (), literally, burden of proving - burden of proof
Merriam-Webster Online Thesaurus
onus (noun)1.
a mark of guilt or disgrace
SYNONYMS:
blot, brand, onus, slur, smirch, smudge, spot, stigma, taintRELATED WORDS:
black eye, discredit, disesteem, disgrace, dishonor, disrepute, guilt, ignominy, infamy, obloquy, odium, opprobrium, reproach, shame; corruption, debauchery, depravity, immorality, iniquity, licentiousness, sin, unscrupulousness, viceNEAR ANTONYMS:
award, credit, honor; chasteness, chastity, modesty, purity, stainlessness; good, right; honesty, integrity, legitimacy, probity, rectitude, scrupulousness, uprightness; goodness, righteousness, virtuousness; fame, glory, renown, repute2.
responsibility for wrongdoing or failure
SYNONYMS:
culpability, fault, guilt, onus, rapRELATED WORDS:
blameworthiness, complicity, guiltiness, sinfulness; accusation, censure, condemnation, denunciation, finger-pointing, reproach; regret, remorse, self-reproach, shame