What does "online" mean?
To bring (a system, etc.) online; to promote to an active or running state.
Online
/ˈɒnlaɪn/ adj, adv, verb, slang
adj, adv, verb, slang ·Common ·High school level
Meaning at a glance
- Primary sense: To bring (a system, etc.) online; to promote to an active or running state.
- Grammar: online is listed as adj, adv, verb, slang.
- Nearest alternatives: advertise online, always online, banking systems, book club online.
- Useful contrasts: brick and mortar, hardcopy, living under a rock.
- Usage evidence: It almost scared me not to see you online for a whole day.
How to use "online"
- Start with the primary definition, then check the part of speech before placing the word in a sentence.
- Compare nearby synonyms to make sure "online" carries the exact meaning, tone, and strength you need.
- Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.
Meaning check
- Does the word fit the sentence's grammar?
- Does it match the intended tone rather than only the dictionary definition?
- Would a simpler synonym be clearer for the reader?
- Is there enough surrounding context to prevent ambiguity?
Source and review context
This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "online" in a final draft.
If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.
Before you rely on this definition
Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "online" as the right word for your sentence.
If your draft is formal, technical, persuasive, or sensitive, compare "online" with a nearby alternative so the final choice matches both meaning and reader expectation.
Compare nearby meanings
- Use synonyms when you need a softer, stronger, simpler, or more specific word.
- Use antonyms to check the boundary of the meaning and avoid accidental contrast.
- Use the example sentence to confirm the word behaves naturally in context.
- Keep the original wording when a replacement adds complexity without improving precision.
Definition decision workflow
1. Identify the role
Check whether "online" is acting as adj, adv, verb, slang in your sentence. A definition is only useful when the grammar matches the way the word is being used.
2. Test the nearest option
Compare it with "advertise online" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.
3. Confirm with context
Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.
Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.
Final meaning check
Before publishing a sentence with "online", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.
When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.
Definitions
Verb
- 1 To bring (a system, etc.) online; to promote to an active or running state. transitive
"The output in Listing 8-2 shows your disk group status prior to onlining the disks, the commands to online your disks, and the status after onlining."
Adjective
- 1 Of a system: connected (generally electrically) to a larger network.; Of a generator or power plant: connected to the grid.
- 2 Of a system: connected (generally electrically) to a larger network.; Of a computer: actively connected to the Internet or to some other communications service.
"Is this modem online?"
- 3 Available over, or delivered from, the Internet.
"In America alone, people spent $170 billion on “direct marketing”—junk mail of both the physical and electronic varieties—last year. Yet of those who received unsolicited adverts through the post, only 3% bought anything as a result. If the bumf arrived electronically, the take-up rate was 0.1%. And for online adverts the “conversion” into sales was a minuscule 0.01%."
- 4 Connected to the Internet.
"I'll be online tonight, so I'll be able to reply to your email."
- 5 Available on a computer system, even if not networked.
"Press the F1 key to access the online help."
Show 2 more definitions
- 6 Of a system: active, particularly building facilities (such as power) or a factory or power plant.
"The power is online."
- 7 Immersed in Internet culture. (Usually modified by an intensifier such as extremely or terminally) slang
"terminally online"
Adjective
- 1 being in progress now wordnet
- 2 connected to a computer network or accessible by computer wordnet
- 3 on a regular route of a railroad or bus or airline system wordnet
Adverb
- 1 While online; while in a running or active state, or connected to the Internet. not-comparable
"He works online."
Adverb
- 1 through a computer or a computer network wordnet
Synonyms
All synonyms advertise onlinealways onlinebanking systemsbook club onlinechat platformchat room
Example
"It almost scared me not to see you online for a whole day."
Common questions
What is a synonym for "online"?
Common synonyms include: advertise online, always online, banking systems, book club online, chat platform, chat room.
How do you use "online" in a sentence?
It almost scared me not to see you online for a whole day.
How do you pronounce "online"?
Pronounced /ˈɒnlaɪn/.
Etymology
1950, from on + line.