lover
Word family
Synonym discussion
Sense: noun/1
'Lover' and 'boyfriend/girlfriend' both describe romantic relationships, but 'lover' carries a stronger emphasis on the physical or intensely emotional bond. In everyday conversation, 'boyfriend' or 'girlfriend' is neutral and widely accepted, while 'lover' can sound dramatic, private, or old-fashioned — a couple might say 'This is my boyfriend, Owen,' but rarely 'This is my lover, Owen.' 'Partner' is the broadest term, covering dating, cohabiting, and married couples without revealing marital status. 'Paramour' and 'mistress' are literary or legalistic: 'paramour' suggests a secret affair, and 'mistress' specifically refers to a woman in a long-term sexual relationship with a married man. For example: 'She introduced him as her partner at the office party' sounds modern and neutral; 'She introduced him as her lover' would raise eyebrows.
Etymology
The word 'lover' comes from Old English 'lufu' (love) plus the agent suffix '-er', meaning 'one who loves'. The romantic-partner sense appeared in the 1300s, and by the 1500s it was also being used for someone who loves a thing ('a lover of books'). The two core meanings — a person you love romantically, and a person who loves an activity — have both been in continuous use for centuries.