The phrase "am at disposal" typically means that someone is available and ready to be of assistance to others. Therefore, antonyms for this phrase may include unapproachable, unavailable, unavailable, inaccessible, or unresponsive. These terms are used to describe someone who is not willing or able to help others when they are in need. While someone who is at disposal is open and willing to assist, an individual who is seen as unapproachable may project an unwillingness to be of help or too busy to take on additional responsibilities. On the other hand, someone who is seen as unavailable may be unable to assist. Therefore, it is vital to consider the context to determine the suitable antonym for "am at disposal.