The word "nutjob" is a colloquial term used to describe someone who is considered crazy, eccentric, or mentally unstable. However, it is always better to avoid using derogatory terms and use more appropriate synonyms that are suitable for all occasions. Some synonyms that could be used instead of the word nutjob include eccentric, bizarre, offbeat, unhinged, deranged, unstable, and erratic. These words are more appropriate and help avoid offending anyone who may be struggling with mental health issues. It's always important to be mindful of the words we use when referring to people and try to use more respectful and considerate language.