adj. 25B6; adjective
an infallible sense of timing : UNERRING, unfailing, faultless, flawless, impeccable, perfect, precise, accurate, meticulous, scrupulous; Brit. informal spot on.
infallible cures : UNFAILING, guaranteed, dependable, trustworthy, reliable, sure, certain, safe, foolproof, effective; informal sure-fire; formal efficacious.