1.
father-in-law
One's spouse's father.
2.
stepfather
A man married to one's mother who is not one's biological father.
Terms of address
While 義父 is the formal/written term, in conversation people typically address their father-in-law as:
- お義父さん - most common (same pronunciation as the ordinary word for "father")
- 義理のお父さん - explicit "in-law's father"
Usage
義父 is more commonly used in:
- Written documents
- Speaking about (not to) one's father-in-law
- Formal contexts
The ぎ- prefix indicates a family relationship through marriage rather than blood. Contrast 養父, which is used for an adoptive father.
FAMILY TERMS WITH THE ぎ- PREFIX:
Related Words
Related:
義母 (mother-in-law)
Compare:
父 (father (biological))
Compare:
養父 (adoptive father)
Related:
義兄 (brother-in-law (older))
Related:
継父 (stepfather)
Related:
実父 (biological father)