seed
1 egg, egg cell, embryo, germ, grain, kernel, ovule, ovum, pip, spore
2 beginning, germ, inkling, nucleus, source, start, suspicion
3 (figurative) children, descendants, heirs, issue, offspring, progeny, race, scions, spawn, successors
4 go or run to seed decay, decline, degenerate, deteriorate, go downhill (informal) go to pieces, go to pot, go to rack and ruin, go to waste, let oneself go, retrogress