The most effective type to use is Ghost, Bug, or Dark.
Psychic, Ghost or Dark
Fighting types are weak against psychic and flying types.
Fighting type Pokemon are weak exist Flying and Psychic.
Psychic Pokemon are strong against fighting and posion types, but they are weak against dark type. The best basic psychic Pokemon is Alakazam
Weak: Psychic Strong: Fighting
psychic type pokemon are weak against psychic steel and dark
Psychic is strong against Poison and Fighting, weak against Psychic and Steel, and has no effect on Dark. Bug, Dark, and Ghost are strong against Psychic. Psychic and Fighting are weak against it. There are no types that have zero effect on it.
Poison types are weak against Ground and Psychic types.
dark, for one, but psychic is super effective against dark to, try doing some research, it will be easy to find out.
Hitmontop is a Fighting Type pokemon which are weak to Psychic, Fairy, and Flying type moves.
Machamp is a Fighting type pokemon which are weak to Psychic, Fairy, and Flying type moves.
What are psychic type Pokemon weak against
The three main Pokemon types that hold an advantage against psychic type Pokemon, are bug, ghost, and dark types. Ghost and Dark type Pokemon are usuallypreferredby trainers, usually due to their accuracy, and high critical moves, such as Night Slash. Odd enough, Dark type Pokemon are weak against bug types, while Ghosts are weak against Ghost and Dark types.