Other forms: soulmates
A soulmate is the one person who fits your heart perfectly. Find your soulmate, we were soulmates, searching for a soulmate.
The idea is old and the word is not: Coleridge used it in a letter in 1822 and it stayed rare until the 1980s. Believing in one has been found to make relationships harder rather than easier, because it frames difficulty as evidence of a wrong match. Note that it need not be romantic.
1nounsoulmateThe one person who fits your heart perfectly.
“After twenty years of marriage, she still calls him her soulmate.”
soulmate is a perfect companion.
Soul plus mate, first attested in a letter by Coleridge in 1822. It was rare until the 1980s.
From soul + mate. First attested as soul-mate in an 1822 letter by Samuel Taylor Coleridge. Not in common usage before the 1980s.
Etymology from Wiktionary, CC BY-SA