n. 25B6; adjective
a stable tent : FIRM, solid, steady, secure, fixed, fast, safe, moored, anchored, stuck down, immovable.
a stable person : WELL BALANCED, of sound mind, compos mentis, sane, normal, right in the head, rational, steady, reasonable, sensible, sober, down-to-earth, matter-of-fact, having both one's feet on the ground; informal all there.
a stable relationship : SECURE, solid, strong, steady, firm, sure, steadfast, unwavering, unvarying, unfaltering, unfluctuating; established, abiding, durable, enduring, lasting, permanent, reliable, dependable.
loose, wobbly, unbalanced, rocky, lasting, changeable.