son in law definition

Son-in-law – is the man who is married to your daughter or, more broadly, your child’s husband. We use this word when talking about family relationships, weddings, visits, housing, family events, and everyday responsibilities.

Part of speech:
Noun (singular countable)
Phonetic transcription (IPA):
/sʌn.ɪn.lɑː/
CEFR level:
B1
Word frequency:

Pronunciation & Spoken Tips for “Son-in-law”

flag uk Audio (UK):
Play
00:00 / 00:00
flag us Audio (US):
Play
00:00 / 00:00

Three syllables, stressed on the first one: SON-in-law. The vowel in the word “son” should be short and open, /ʌ/, which is exactly like the vowel in such words as “sun,” “run,” and “done.” It is important not to fall into the spelling pronunciation trap.

Level up your English with Koto!

Countability & Plural Rules for “Son-in-law”

It is a countable compound noun, meaning you can use phrases like a “son-in-law,” “one son-in-law,” “two sons-in-law”, etc. The difficult part is the pluralization process because while adding -s to son, you must not add -s to law. See how it’s done below.

Form 

Correct use 

Example 

Singular 

a son-in-law 

  They welcomed a new son-in-law into the family after the wedding.

Plural 

sons-in-law 

  Both of her sons-in-law work in healthcare.

Singular possessive 

son-in-law’s 

  My son-in-law’s train was cancelled, so he arrived late.

Plural possessive 

sons-in-law’s 

  The sons-in-law’s speeches made the dinner feel warm and personal.

The same pattern appears in words like “brother-in-law” and “mother-in-law”. Make the main family word plural: “brothers-in-law,” “mothers-in-law,” “sons-in-law”.

Natural Collocations With “Son-in-law” in Family Talk

Kinship terms become more idiomatic once you learn the verbs and adjectives which typically accompany them. It is common for native speakers to use the phrases meet, welcome, trust, help, or get along with a son-in-law. Try out these collocations when referring to kinship relations.

Verbs You Often Use With “Son-in-law” Naturally

These verbs would be used when adults discuss issues related to their families. You will see that most of the verbs contain possessives such as my, her, or their since family words usually require ownership.

Verb collocation 

Meaning 

Example 

have a son-in-law 

be related to one through marriage 

  She has a son-in-law who likes diving so much.

meet your son-in-law 

see him for the first time 

  I met my future son-in-law at a small dinner last spring.

welcome a son-in-law 

accept him into the family 

  They welcomed their son-in-law with kindness and respect.

get along with your son-in-law 

have a good relationship with him 

  He gets along well with his son-in-law, especially when they talk about football.

invite your son-in-law 

ask him to attend something 

  We invited our son-in-law to join us for the vacation.
son in law in a sentence

Adjectives That Describe a “Son-in-law” Clearly

For instance, when describing your “son-in-law”, select adjectives that apply to the relation rather than the person. The following are some of the expressions that are used in everyday language.

Adjective phrase 

Meaning 

Example 

future son-in-law 

a man who will marry your daughter

  Her future son-in-law asked more about family members before the wedding.

new son-in-law 

recently joined the family by marriage 

  Their new son-in-law is still learning everyone’s names.

supportive son-in-law 

helpful and caring 

  She feels lucky to have such a supportive son-in-law.

reliable son-in-law 

someone the family can depend on 

  My reliable son-in-law drove us to the hospital appointment.

Common Mistakes With “Son-in-law” Grammar To Avoid

Son-in-law errors usually stem from issues with spelling, plurals, genders, and possession. Correcting these minor things will make your English writing much better in your emails, texts, and even personal narratives. Learn the corrections and attempt to write your own sentence.

Incorrect variant Correct sentence 

Why?

  My son in law lives nearby.
  My son-in-law lives nearby.

Use hyphens in the compound noun. 

  She has two son-in-laws.
  She has two sons-in-law.

The plural goes on son, not law

  My son’s-in-law car is outside.
  My son-in-law’s car is outside.

Put the possessive at the end of the full compound noun. 

  He became my son-in-law with my daughter.
  He became my son-in-law when he married my daughter.

Use when he married to explain the relationship clearly. 

“Son-in-law” in Spanish, French, and German

Translations will help you link this English word with the corresponding family terms in your native language. Watch out – family terms do not necessarily translate literally, particularly in gendered languages. These are the best translations.

Language Word for “Son-in-law”
Flag Spanish Spanish   Yerno
Flag French French   Gendre
Flag German German   Schwiegersohn