Synonyms in Detail: onboard and aboard Usage & Differences

What context can I use each word in?

Learn when and how to use these words with these examples!

onboard

Example

All passengers must be onboard the plane before takeoff. [onboard: adverb]

Example

We need to onboard new employees quickly to get them up to speed. [onboard: verb]

Example

The new car model has onboard navigation and entertainment systems. [onboard: adjective]

aboard

Example

All passengers must be aboard the ship before it departs. [aboard: adverb]

Example

The captain welcomed the passengers aboard the cruise ship. [aboard: preposition]

Example

The board of directors is still discussing whether to come aboard with the new project. [aboard: phrasal verb]

Good things to know

Which word is more common?

Aboard is more commonly used than onboard in everyday language, especially in nautical contexts. However, onboard is becoming more common in technical and business contexts.

What’s the difference in the tone of formality between onboard and aboard?

Both onboard and aboard are considered formal enough to be used in professional or business settings. However, onboard may be perceived as slightly more formal due to its technical connotation.

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