A Betazoid word meaning beloved, used between Deanna Troi and William Riker throughout their long relationship, often passed silently from mind to mind.
Imzadi is a term of endearment in the Betazoid language, translated as beloved. It implies a bond deeper than ordinary affection.
The word is first heard in Haven, when Deanna Troi uses it in telepathic contact with William Riker. The two had been lovers on Betazed some years before they were posted to the Enterprise. They use it at moments of danger or closeness during The Next Generation, including Ménage à Troi and Shades of Gray, even while their relationship is officially a friendship.
The romance resumes in Star Trek: Insurrection and they marry in Star Trek: Nemesis. The word is still theirs decades later in Picard, where the couple are seen at home on Nepenthe and again aboard the Titan.