What is this skill?
A synonym is a word that means nearly the same as another, such as big and huge. An antonym is a word that means the opposite, such as hot and cold. In third grade children go beyond naming them. They start to notice that synonyms are close and not identical, and that picking the right one changes how a sentence sounds. A cautious person and a careful person are alike, yet a cautious one may be holding back.
The questions begin with plain ones: a synonym for happy (glad is among the choices), an antonym for hot, a synonym for big, an antonym for begin. They then climb to words like quiet and silent, difficult and hard, brave and fearful, and the harder pair expand and shrink. Some ask which pair of words are antonyms, such as ancient and modern, or synonyms, such as wealthy and rich. Sorting questions give a target word such as fast, kind, begin or ordinary and ask children to put each choice with "Same" or "Opposite." Because finish is the opposite of begin and start means the same, those lists make children think and not just match. Yes-or-no questions ask whether tiny and small, whisper and shout, or shy and bold are synonyms or antonyms.
Why it matters
Knowing word relationships is a quick way to grow a vocabulary: each new word attaches to a few that your child already has. It also supports comprehension, because a writer rarely uses the same word twice, and a reader who knows that glad and happy are close can follow without losing the thread.
It matters for writing, too. Children who can reach for a stronger synonym in place of "said" or "nice" write sentences that sound more like themselves, and they are able to understand a thesaurus when they meet one in upper grades.
Common mistakes
- Mixing the two terms up. Synonym and antonym sound alike and look alike. A hint that works for many families: synonym and same both start with s.
- Choosing a related word instead of a true opposite. Cold goes with hot, but so do warm and spicy. Ask, "If one is up, is the other down?"
- Treating every synonym as perfectly swappable. Whisper and speak are close, but they do not fit every sentence. Have your child read the sentence aloud with the new word.
- Missing words with a hidden negative, like finish for begin. Say the pair in a sentence: "The race will begin" and "The race will finish."
How to help at home
- Play opposites on car rides. Say a word and have your child answer with an antonym, then switch. Trade it for synonyms and see who runs out first.
- Ban a word for the day, such as nice or big, and ask your family to find stronger ones.
- When reading, pause at a vivid word and ask, "What is another word that could go here? Would it change the feeling?"
- Make a two-column page at home, Same and Opposite, with one word at the top and a few choices to sort. It is the same activity as the sorting questions on this page.
Worked examples
These are real questions from the Tutorsaurus synonyms and antonyms practice, with the answers worked out.
Example 1
Which word is a synonym for "happy"?
Choices: Angry, Glad, Sad, Tired
Answer: Glad. Glad means happy, so glad is a synonym for happy.
Example 2
True or false: "Whisper" and "shout" are synonyms.
Answer: False. False. Whisper means to speak very softly and shout means to speak very loudly, so they are antonyms.
Example 3
Which word is a synonym for "cautious"?
Choices: Careful, Speedy, Careless, Wild
Answer: Careful. Cautious means careful.
Printable worksheet (PDF) — one page of questions from this practice that work on paper, easier ones first, with an answer key on page 2. Free to print, no sign-up.