| A | B |
| symbiosis | relationships between two organisms that is mutually beneficial |
| symmetry | both sides having the same shape and size |
| sympathy | feeling kindnes with someone who suffers |
| symposium | conference discussing same topic |
| symptoms | outward signs that together tell what patient is suffering from |
| synagogue | Jewish place of worship |
| syndicate | group of businesses |
| synonym | word that has same meaning |
| synthesis | putting thoughts ideas together |
| synthetic | artificial fake |
| recheck | to look at again |
| reclosable | able to be sealed again |
| reelect | to vote in office again |
| refund | money given back to you |
| reimburse | to give back |
| remember | to think of again |
| renew | to make new again |
| repeat | to say again |
| respond | to answer back |
| revive | to bring to life again |