Antonyms of adj erratic

3 senses of erratic

Sense 1
erratic, fickle, mercurial, quicksilver (prenominal) -- (liable to sudden unpredictable change; "erratic behavior"; "fickle weather"; "mercurial twists of temperament"; "a quicksilver character, cool and willful at one moment, utterly fragile the next")

INDIRECT (VIA changeable) -> unchangeable -- (not changeable or subject to change; "a fixed and unchangeable part of the germ plasm"-Ashley Montagu; "the unchangeable seasons"; "one of the unchangeable facts of life")

Sense 2
erratic, planetary, wandering -- (having no fixed course; "an erratic comet"; "his life followed a wandering course"; "a planetary vagabond")

INDIRECT (VIA unsettled) -> settled -- (established in a desired position or place; not moving about; "nomads...absorbed among the settled people"; "settled areas"; "I don't feel entirely settled here"; "the advent of settled civilization")

Sense 3
erratic, temperamental -- (likely to perform unpredictably; "erratic winds are the bane of a sailor"; "a temperamental motor; sometimes it would start and sometimes it wouldn't"; "that beautiful but temperamental instrument the flute"- Osbert Lancaster)

INDIRECT (VIA unreliable, undependable) -> reliable, dependable -- (worthy of reliance or trust; "a reliable source of information"; "a dependable worker")
INDIRECT (VIA unreliable, undependable) -> reliable, dependable -- (worthy of reliance or trust; "a reliable source of information"; "a dependable worker")

Similarity of adj erratic

3 senses of erratic

Sense 1
erratic, fickle, mercurial, quicksilver (prenominal) -- (liable to sudden unpredictable change; "erratic behavior"; "fickle weather"; "mercurial twists of temperament"; "a quicksilver character, cool and willful at one moment, utterly fragile the next")
       => changeable (vs. unchangeable), changeful -- (such that alteration is possible; having a marked tendency to change; "changeable behavior"; "changeable moods"; "changeable prices")

Sense 2
erratic, planetary, wandering -- (having no fixed course; "an erratic comet"; "his life followed a wandering course"; "a planetary vagabond")
       => unsettled (vs. settled) -- (not settled or established; "an unsettled lifestyle")

Sense 3
erratic, temperamental -- (likely to perform unpredictably; "erratic winds are the bane of a sailor"; "a temperamental motor; sometimes it would start and sometimes it wouldn't"; "that beautiful but temperamental instrument the flute"- Osbert Lancaster)
       => unreliable (vs. reliable), undependable (vs. dependable) -- (not worthy of reliance or trust; "in the early 1950s computers were large and expensive and unreliable"; "an undependable assistant")