Synonyms for the word "spermi-" primarily relate to semen and the reproductive process. One commonly used synonym is "spermatic," which refers to anything related to or derived from sperm. Another term commonly utilized is "seminal," which signifies something that is influential or foundational, especially in relation to creative, scientific or philosophical endeavors. Additionally, the term "ejaculate" is another synonym that specifically denotes the act of expelling semen from the body during sexual arousal. It is important to note that these terms are typically used in scientific or medical contexts and may not be suitable for everyday conversation.