轻易 is almost always used in negative sentences: 不要轻易... (don't rashly...), 不会轻易... (won't easily...). It carries a warning tone — don't do this carelessly.
mistakes
Don't confuse 轻易 with 容易 (róngyì, easy). 容易 simply means 'easy' and is neutral. 轻易 means doing something too readily or carelessly, and is usually negative.