The word "μονογενής" (monogenēs) primarily means "only" or "only begotten," often referring to a unique or singular child, such as a son or daughter. It is used in contexts describing an only child (e.g., Luke 7:12, 8:42, 9:38) or, in some cases, to describe Christ as uniquely related to God (e.g., John 3:16, 1 John 4:9). The term emphasizes singularity and uniqueness in relationship or origin.