Antonyms of adj chancy

2 senses of chancy

Sense 1
chancy, chanceful, dicey, dodgy -- (of uncertain outcome; especially fraught with risk; "an extremely dicey future on a brave new world of liquid nitrogen, tar, and smog"- New Yorker)

INDIRECT (VIA dangerous) -> safe -- (free from danger or the risk of harm; "a safe trip"; "you will be safe here"; "a safe place"; "a safe bet")

Sense 2
chancy, fluky, flukey, iffy -- (subject to accident or chance or change; "a chancy appeal at best"; "getting that job was definitely fluky"; "a fluky wind"; "an iffy proposition")

INDIRECT (VIA uncertain) -> certain, sure -- (certain to occur; destined or inevitable; "he was certain to fail"; "his fate is certain"; "In this life nothing is certain but death and taxes"- Benjamin Franklin; "he faced certain death"; "sudden but sure regret"; "he is sure to win")

Similarity of adj chancy

2 senses of chancy

Sense 1
chancy, chanceful, dicey, dodgy -- (of uncertain outcome; especially fraught with risk; "an extremely dicey future on a brave new world of liquid nitrogen, tar, and smog"- New Yorker)
       => dangerous (vs. safe), unsafe -- (involving or causing danger or risk; liable to hurt or harm; "a dangerous criminal"; "a dangerous bridge"; "unemployment reached dangerous proportions")

Sense 2
chancy, fluky, flukey, iffy -- (subject to accident or chance or change; "a chancy appeal at best"; "getting that job was definitely fluky"; "a fluky wind"; "an iffy proposition")
       => uncertain (vs. certain) -- (not certain to occur; not inevitable; "everything is uncertain about the army"; "the issue is uncertain")