proto-proto- /prəʊtəʊ, -tə $ proʊtoʊ, -tə/ prefix 
technical existing or coming before other things of the same type: 
a proto-fascist group a prototype
technical existing or coming before other things of the same type: a proto-fascist group a prototype- whisper
- whispering campaign
- whist
- whistle
- whistle-blower
- whistle-blowing
- Whistler, James McNeill
- whistle-stop
- Whit
- whit
- Whitaker's Almanack
- white
- whitebait
- white blood cell
- whiteboard
- white-bread
- whitecaps
- white Christmas
- white cliffs of Dover
- white-collar
- white corpuscle
- white dwarf
- white elephant
- white flag
- white flight