Alternative form of too many cooks spoil the broth

One cannot expect success at the first attempt; practice makes perfect.

Someone who puts an end to others' fun, especially harmless fun.

Like a spoilsport.

plural of spoilsport

(US) A politician who serves only for a share of the spoils.

plural of spoilsmonger

One who promises or distributes public offices and their emoluments as the price of services to a party or its leaders.

plural of spoilsman

Characterised by spoiling or ruin; ruinous