Adi was born in Jerusalem on December 7, 1924. His father, Sheikh Nasib Al Bitar’s continuous relocation around Palestine forced him to enroll at the Terra Sancta School in Jerusalem as a boarder. He graduated school with honors.
To help pay for his college fees Bitar worked as a clerk at the Chief Secretary's office in Jerusalem. The British had chosen the King David Hotel as their headquarters in a secure zone, thus requiring a pass to enter. On July 22, 1946, the King David Hotel was bombed by members of Irgun — a terrorist Zionist organization. Adi was in the building when the bomb exploded and was saved only because his elder brother Bahij; who also worked there, insisted that Adi was buried alive under the rubble. It took two hours to reach him and he was found alive with two broken arms and two broken ribs and with many bruises all over his face and body. It took several weeks for his injuries to heal.
Jerusalem
He then was accepted by the Jerusalem Law Classes. These were established by the British mandate as a college of law to create a workforce of lawyers who understood the new laws that were being implemented in the region, replacing the existing Ottoman Laws. He graduated on April 26, 1948 and was registered as a lawyer on June 16, 1949. He joined the district attorney's office in Jerusalem until his resignation August 18, 1956, to work in Sudan as a judge. During his time with the district attorney's office, Adi took part in the initial hearings of the murder of King Abdullah I of Jordan that occurred on July 20, 1951, in Jerusalem.
Sudan
In 1956, he was appointed as the Blue Nile District Judge in Sudan at Wad Medani, first as a deputy, and then with a full appointment a year later. . In late 1959 he returned to Jerusalem where he established his own law firm.
Bitar was appointed as the Secretary General to the Trucial States Council in 1967, and served until it closed in 1971 when the federation was created and the United Arab Emirates emerged as a new Arab State.
The United Arab Emirates
He took a very active and strategic role in the formation of the UAE. It was decided by Sheikh Zayed Bin Sultan Al Nahyan and Sheikh Rashid bin Saeed Al Maktoum during their meeting at the "Abu Dhabi - Dubai" border point at Sumaih, now known as the "Sumaih Meeting", that Adi Bitar should write the constitution. It was approved and signed by the Rulers of six Emirates in the Dubai Guesthouse Palace on December 2, 1971, the date now celebrated as the UAE National Day. The Emirate of Ras Al Khaima joined a few months later.
Adi helped build good relations between UAE and Jordan. He managed to create strong relations between Sheikh Rashid bin Saeed Al Maktoum and King Hussein Bin Talal of Jordan. He received two medals from the Jordanian monarch.
Death
Two years after the formation of the UAE he died of colon cancer, and was buried in Dubai on March 4, 1973. Adi was buried next to his 10-year-old son Issa who had died three months earlier of leukemia.