Illiterate or semi-literate.
A person who is bad at spelling is called a poor speller or someone with dyslexia.
uneducated. Maybe he/she is dyslexic
the person who makes many spelling mistakes (or even bad handwriting or both) is called as cacographer.
Not sure of the spelling but you could say nemaciss
While "coscos" is an incorrect spelling of the word "couscous" or "cous-cous", it doesn't necessarily mean that a person's overall spelling ability is bad. It isn't a common English word, therefore some leniency may be given.
Jinx
A person who has done something bad is commonly referred to as a wrongdoer, offender, or simply a person who has committed a wrongdoing.
A person who struggles with spelling is often referred to as a poor speller or dyslexic. It's important to provide support and resources to help improve their spelling skills.
sacrelige.
No, poor education, or laziness causes bad spelling.
A person with a bad temper is called "enojon"I agree but also.....A person with bad temper is also called temper active.
PROGRAMER Or: programmer. Using the correct spelling (so tempted to say grammar).
Not too bad.