When something has value, it is worth something. Sometimes it is worth money, or it is important to someone in another way. My grandmother's necklace is valuable to me because it reminds me of my grandmother. My cell phone is valuable because it cost a lot of money. Answer from i_see_that_town on hinative.com
valuable
/văl′yoo͞-ə-bəl, văl′yə-/
adjective
  1. Having considerable monetary or material value for use or exchange.
    a valuable diamond.
  2. Of great importance, use, or service.
    valuable information; valuable advice.
  3. Having admirable or esteemed qualities or characteristics.
    a valuable friend.
from The American Heritage® Dictionary of the English Language, 5th Edition. More at Wordnik
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Reverso
dictionary.reverso.net › english-definition › valuable
VALUABLE - Definition & Meaning - Reverso English Dictionary
1 adj If you describe something or someone as valuable, you mean that they are very useful and helpful.
Discussions

Both "Valuable" and "Invaluable" has positive meaning, despite the latter having the negative (?) prefix on it. Are there more examples of something similar?
You're missing a key piece of the puzzle here. 'To value' has two main meanings: (1) to estimate or determine the worth of something, or (2) to cherish/treasure/highly regard something for its inherent worth. The house is valued at $250,000 I value his sage advice Valueable—literally "able to be valued"—is formed from the second meaning, something that can be cherished because of its value. Whereas invalueable—"can't be valued"—comes from the first meaning. Invalueable carries the implication of "so good that its worth couldn't even be calculated". More on reddit.com
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August 20, 2023
Why does the word “priceless” mean valuable?
"Priceless", as in, "it's so valuable, we cannot imagine what the price would be, so we won't even try setting one." More on reddit.com
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July 29, 2024
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Merriam-Webster
merriam-webster.com › dictionary › valuable
VALUABLE Definition & Meaning - Merriam-Webster
1 week ago - The meaning of VALUABLE is having monetary value. How to use valuable in a sentence. invaluable = valuable?
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Quora
quora.com › What-do-you-mean-by-valuable
What do you mean by valuable? - Quora
Answer (1 of 20): The most valuable thing we have on this earth is the word of God in the Holy Scriptures that are able to make you wise for salvation through faith in Jesus Christ. 2 TIMOTHY 3:14 “But as for you, continue in what you have learned and have become convinced of, because you know t...
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Cambridge Dictionary
dictionary.cambridge.org › us › dictionary › english › valuable
VALUABLE | definition in the Cambridge English Dictionary
VALUABLE meaning: 1. worth a lot of money: 2. Valuable information, advice, etc. is very helpful or important: 3…. Learn more.
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Dictionary.com
dictionary.com › articles › invaluable-vs-valuable
Invaluable vs. Valuable: Do They Mean the Same Thing? | Dictionary.com
July 23, 2025 - The word valuable is an adjective that means “having a large monetary worth,” “having admirable qualities,” or “useful.” The word invaluable is an adjective that means “beyond calculable worth” or “priceless.” Typically, ...
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Vocabulary.com
vocabulary.com › dictionary › valuable
Valuable - Definition, Meaning & Synonyms | Vocabulary.com
Something that has worth is valuable. Often, valuable things are worth money, but a spy can provide valuable information that might save lives.
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Dictionary.com
dictionary.com › browse › valuable
VALUABLE Definition & Meaning | Dictionary.com
Valuable, precious refer to that which has monetary or other value. Valuable applies to whatever has value, but especially to what has considerable monetary value or special usefulness, rarity, etc.: a valuable watch.
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Cambridge Dictionary
dictionary.cambridge.org › us › dictionary › essential-british-english › valuable
VALUABLE definition | Cambridge Essential English Dictionary
VALUABLE meaning: 1. Valuable objects could be sold for a lot of money: 2. Valuable information, help, advice, etc…. Learn more.
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Mnemonic Dictionary
mnemonicdictionary.com › word › valuable
valuable meaning - definition of valuable by Mnemonic Dictionary
MnemonicDictionary.com - Meaning of valuable and a memory aid (called Mnemonic) to retain that meaning for long time in our memory.
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Collins Dictionary
collinsdictionary.com › us › dictionary › english › valuable
VALUABLE definition in American English | Collins English Dictionary
If you describe something or someone as valuable, you mean that they are very useful and helpful.
Published   March 26, 2018
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Thesaurus.com
thesaurus.com › browse › valuable
VALUABLE Synonyms & Antonyms - 90 words | Thesaurus.com
Find 90 different ways to say VALUABLE, along with antonyms, related words, and example sentences at Thesaurus.com.
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Reddit
reddit.com › r/englishlearning › both "valuable" and "invaluable" has positive meaning, despite the latter having the negative (?) prefix on it. are there more examples of something similar?
r/EnglishLearning on Reddit: Both "Valuable" and "Invaluable" has positive meaning, despite the latter having the negative (?) prefix on it. Are there more examples of something similar?
August 20, 2023 -

Just want to expand my vocabularies on something like this, which I found fascinating these days. Valuable which means something precious or of a certain value that's worth to pay or get, sounds as positive as Invaluable which means something so precious that you can't put a price tag on it. They usually have opposite meaning, like Possible vs Impossible, Understood vs Misunderstood, Beatable vs Unbeatable. I wonder if there are other similar examples.

note: put (?) after "negative" because I'm not sure if they call "In-" or "Im-" a negative prefix in English.

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Wordsmyth
kids.wordsmyth.net › we
valuable | definition for kids | Wordsmyth Word Explorer Children's Dictionary; WILD dictionary K-2 | Wordsmyth
having a great value in money; expensive. : considered to be of great worth; useful; important. : (usually plural) something worth a lot of money, such as a piece of jewelry.... See the full definition
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Oxford English Dictionary
oed.com › dictionary › valuable_adj
valuable, adj. & n. meanings, etymology and more | Oxford English Dictionary
There are ten meanings listed in OED's entry for the word valuable, two of which are labelled obsolete.