mentally deranged; demented; insane.
Crazy is very commonly used as an adjective to embody a vast array of ideas, often not specifically. It is used so frequently that it sometimes is a filler. Crazy can also be used in a derogatory manner for someone with mental or psychiatric disabilities.
By using ableist language, we are perpetuating violence against people who experience mental or psychological disabilities. Using this language perpetuates those systems and language of harm, regardless of our intent.
Be more specific. Typically we can find an alternate definition by simply reflecting on what emotion we're really feeling.