adj. based; -- often used as combining terms; as, well-founded suspicions.
Syn. -- based. [ WordNet 1.5 ]

v. i. [ imp. & p. p. Foundered p. pr. & vb. n. Foundering. ] [ OF. fondrer to fall in, cf. F. s'effondrer, fr. fond bottom, L. fundus. See Found to establish. ] 1. (Naut.) To become filled with water, and sink, as a ship. [ 1913 Webster ]

2. To fall; to stumble and go lame, as a horse. [ 1913 Webster ]

For which his horse fearé gan to turn,
And leep aside, and foundrede as he leep. Chaucer. [ 1913 Webster ]

3. To fail; to miscarry. “All his tricks founder.” Shak. [ 1913 Webster ]

v. t. To cause internal inflammation and soreness in the feet or limbs of (a horse), so as to disable or lame him. [ 1913 Webster ]

n. (Far.) (a) A lameness in the foot of a horse, occasioned by inflammation; closh. (b) An inflammatory fever of the body, or acute rheumatism; as, chest founder. See Chest ffounder. James White. [ 1913 Webster ]

n. [ From Found to cast. ] One who founds; one who casts metals in various forms; a caster; as, a founder of cannon, bells, hardware, or types. [ 1913 Webster ]

Fonder's dust. Same as Facing, 4. --
Founder's sand, a kind of sand suitable for purposes of molding. [ 1913 Webster ]

n. [ Cf. OF. fondeor, F. fondateur, L. fundator. ] One who founds, establishes, and erects; one who lays a foundation; an author; one from whom anything originates; one who endows. [ 1913 Webster ]

a. Difficult to travel; likely to trip one up; as, a founderous road. [ R. ] Burke. [ 1913 Webster ]

n. (Mining) The first shaft sunk. Raymond. [ 1913 Webster ]

n.; pl. Founderies [ F. fonderie, fr. fondre. See Found to cast, and cf. Foundry. ] Same as Foundry. [ 1913 Webster ]