Antonyms of adj errant

2 senses of errant

Sense 1
errant -- (straying from the right course or from accepted standards; "errant youngsters")

INDIRECT (VIA fallible) -> infallible -- (incapable of failure or error; "an infallible antidote"; "an infallible memory"; "the Catholic Church considers the Pope infallible"; "no doctor is infallible")

Sense 2
errant -- (uncontrolled motion that is irregular or unpredictable; "an errant breeze")

INDIRECT (VIA uncontrolled) -> controlled -- (restrained or managed or kept within certain bounds; "controlled emotions"; "the controlled release of water from reservoirs")

Similarity of adj errant

2 senses of errant

Sense 1
errant -- (straying from the right course or from accepted standards; "errant youngsters")
       => fallible (vs. infallible) -- (likely to fail or make errors; "everyone is fallible to some degree")

Sense 2
errant -- (uncontrolled motion that is irregular or unpredictable; "an errant breeze")
       => uncontrolled (vs. controlled) -- (not being under control; out of control; "the greatest uncontrolled health problem is AIDS"; "uncontrolled growth")