Sister Definition: Sentences, Interesting Idioms, & Quick Test

To learn more about the “sister” definition take a look at how native speakers use this word in everyday contexts to describe different details of their lives and share certain details.

There aren’t lots of “sister” synonyms, but you can still take a look at some of the related words to expand your “family” vocabulary and make your English more fluent.

Related nouns: sibling family member relative

Synonyms (contextual): sis

Common collocations: older sister younger sister friendly sister

Learn how to create meaningful collocations with this word using verbs, adjectives and nouns to understand how these grammatical units work and what information you can share.

With adjectives: angry sister little sister twin sister adopted sister

With verbs: have a sister visit your sister call a sister miss your sister

With nouns (noun + noun): sister relationship sister bond sister secret soul sister

The meaning of “sister” is quite understandable, so we invite you to discover what other points you can share while using this word in different idiomatic contexts. Look at these phrases and read the examples of correct usage.

• Big sister — an older female sibling; used for a mentor or someone who guides younger people.

  Jenny is like a big sister to me, always giving advice and helping when I need it.

• Sisterhood — the bond between women supporting each other, showing female solidarity and friendship.

  The women in our community have a strong sisterhood, always helping each other through difficulties.

• Like brother and sister — very close friends who treat each other like siblings.

  We’ve known each other since childhood — we’re like brother and sister.

• Sister act — when sisters collaborate or perform together.

  Sarah and Sue opened a bakery together. It’s a real sister act.

• Soul sister — a very close female friend who feels like a sister and someone who understands you deeply.

  We’re not related by blood, but she’s my soul sister! We understand each other perfectly.

Check your understanding of the “sister” definition with this quick quiz. Read every task carefully and provide correct answers to apply your knowledge in practice.

Learn how to spell “sister” and pronounce it correctly in other popular languages to broaden your linguistic horizons.

Sister relationships are more complex and influential than many people realize — these interesting details reveal their unique importance in human development!

• Sisters influence each other’s personalities significantly.

  Sisters as siblings usually become more communicative and emotionally intelligent than only children because they share, compromise and engage in dispute resolution throughout early childhood.

• Older sisters often act as second mothers.

  Research indicates that firstborn girls frequently develop the characteristics of being more responsible, nurturing and organized, whereas their younger siblings are more likely to be more rebellious and imaginative, influenced by these distinct family positions.

• Having sisters reduces depression risk.

  Several studies have shown that individuals having sisters report less depression and better mental health. Sisters are a source of receiving emotional support, persuading to express feelings and being the voice of reason in hard times.

• Twin sisters share extraordinary bonds.

  Identical twins are very similar at the DNA level and often develop their own languages, mirror behaviors and report feeling each other’s pain or emotions even when separated. Scientists reveal the complex interplay between genetics and environment in shaping personality.

See what different people say about “sisters,” and the life influence they provide by being a part of families.