1. Happening at the same time; simultaneous.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• syncrinous,
• syncronous,
• asynchrounous,
• synchonous,
• asyncronous,
• synchronus,
• syncrhonous,
• sychronous,
• synchornous,
• asychronous,
• asynchronouse,
• asynchronus,
• synchrounous,
• synkarpous,
• synchroflas,
• sinchronous,
• synchrotrom,
• ischronous,
• isochronous,
• pollychromous

• synchronic,
• synchronise,
• synchronicity,
• synchrony,
• synchroneity,
• synchronized,
• synchronising,
• synchroniser,
• synchronism,
• synchromesh,
• synchronoscope,
• synchroscope,
• synchronal,
• synchronizer,
• synchronously,
• synchrotron,
• synchronizing,
• syncarpous,
• synchroflash,
• synchronize,
• synchronised.

The adjective form of the word "synchronous" is "synchronic".

The plural form of the word "synchronous" is "synchronouses".

The singular form of the word "synchronous" is "synchrony"