stable (adjective) stable: constant, fixed; resistant
Sinonime: abiding, anchored,
balanced, brick-wall,
calm, deep-rooted,
durable,
enduring, equable,
established,
even,
fast,
firm,
immutable, invariable,
lasting, nailed, perdurable,
permanent, poised,
reliable,
resolute,
safe,
secure,
set, set in stone,
solid, solid as a rock,
sound, stabile,
stalwart,
stationary,
staunch, staying put,
steadfast,
steady,
stout,
strong,
sturdy,
substantial,
sure,
together,
tough, unalterable, unchangeable, unfluctuating,
uniform, unvarying,
unwavering, well-built, well-founded
Antonime: inconstant,
shaky, unfixed,
unstable, wobbly