Wiktionary
connectionless
a. (context computing English) Without the use of a constant connection; sending and receiving data arbitrarily as needed, usually with less reliability than if a connection were held open.
Usage examples of "connectionless".
Describe connection-orientated network service and connectionless network service, and identify the key differences between them.
Then, wholly friend and connectionless, Poor Tony, in hiding, began to Withdraw From Heroin.
As with other datagram services, the NetBIOS datagrams are connectionless and unreliable.