adj. s. geom. adv.
solid, firm, stable;
sure, certain, positive;
s. geom. solid;
solidly, firmly, strongly, steadily;
surely, truly, positively;
resolutely.
adj. s. math. adv.
solide, ferme, stable;
sûr, positif, certain;
s. math. solide;
fermement, solidement, d'une manière solide;
fermement, sûrement, positivement.