Synonym: just, merely, simply. Similar words: if only, only too, commonly, only that, only child, online, mainly, openly. Meaning: ['əʊnlɪ] 
adj. 1. being the only one; single and isolated from others 2. exclusive of anyone or anything else. adv. 1. and nothing more 2. without any others being included or involved 3. with nevertheless the final result 4. in the final outcome 5. except that 6. never except when 7. as recently as.
adj. 1. being the only one; single and isolated from others 2. exclusive of anyone or anything else. adv. 1. and nothing more 2. without any others being included or involved 3. with nevertheless the final result 4. in the final outcome 5. except that 6. never except when 7. as recently as. 
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1. Many receive advice only the wise profit by it. 
2. Failure is the only high-road to success.
3. The first step is the only difficulty.
4. Love, and love only, is the loan for love.
5. Only that which is honestly got is gain.
6. It's a poor mouse that has only on hole.
7. Wisdom is only found in truth.
8. No possession, but use, is the only riches.
9. Trouble is only opportunity in work clothes.
10. Perseverance is the only road to success.
11. The only good Indian is a dead Indian.
12. The only cure for grief is action.
13. Only a nation of educated people could remain free.
14. Virtue is the only true nobility.
15. A man can only die once.
16. Genius only means hard-working all one's life .
17. Man can only be free through mastery of himself.
18. Activity is the only road to knowledge.
19. Achievement provides the only real pleasure in life.
20. Trust thyself only, and another shall not betray thee.
21. I am not only witty in myself, but the cause that wit is in other men.
22. Only they who fulfill their duty in everday matters will fulfill them on great occasions.
23. Practical wisdom is only to be learned in the school of experience.
24. Life can only be understood backwards(sentencedict.com), but it must be lived forwards.
25. It is not only the feather that makes the bird.
26. In life's earnest battle they only prevail, who daily march onward and never say fail.
27. Liberty and civilization are only fragments of rights wrung from the strong hands of wealth and book learning.
28. It is the nature of every man to err, but only the fool perseveres in the error.
29. As a modern parent, I know that it's not how much you give children those counts, it's the love and attention you shower on them.A caring attitude can not only save you a small fortune, but also even make you feel good about being tight-fisted and offering more care than presents.
30. Every kind of peaceful cooperation among men is primarily based on mutual trust and only secondly on institutions such as courts of justice and police.