Antonym: neither. Similar words: bother, robot, bottled, other, others, mother, another, tooth. Meaning: [bəʊθ] 
adj. (used with count nouns) two considered together; the two.
adj. (used with count nouns) two considered together; the two. 
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1. Power invariably means both responsibility and danger. 
2. There is much to be said on both sides.
3. A long dispute means that both parties are wrong.
4. The wolf and fox are both privateers.
5. Take one's courage in both hands.
6. It is good to have some friends both in heaven and hell.
7. Friendship is both a source of pleasure and a component of good health.
8. By gambling we lose both time and treasure, two things most precious to the life of man.
9. If the blind lead the blind, both shall fall into the ditch.
10. Both of the women were French.
11. The company deals in both hardware and software.
12. The trade agreements is advantageous to both countries.
13. Both sides have agreed to sign the treaty .
14. Both her children still live at home.
15. Both of them died in abject poverty.
15. Wish you can benefit from our online sentence dictionary and make progress day by day!
16. May you both live a long and healthy life.
17. Would it would be too extravagant to buy both?
18. We both slept right through the storm.
19. He kissed her on both cheeks.
20. Hold the wheel in both hands, thus.
21. We have both seen the movie.
22. She lifted her veil with both hands.
23. May you both live long and healthy lives.
24. Fluid includes both gasses and liquids.
25. Spelling and good grammar are both very important.
26. Both powers withdrew their forces from the region.
27. A new direction was felt desirable for both parties.
28. The best of all good wishes to you both.
29. Truth and love are two of the most powerful things in the world; and when they both go together they cannot easily be withstood.
30. A father is a treasure, a brother is a comfort(sentencedict.com), but a friend is both.
More similar words: bother, robot, bottled, other, others, mother, another, tooth, brother, booth, one another, nothing, and others, smooth, so that, mothering, each other, cannot help, other than, smooth out, grandmother, clothing, to the life, the other day, two-thirds, nothing but, every other, go through, to the full, to the limit.