back up, decline, retreat, stop
Start, Stop, Reset
F-R-I-E-N-D
There are several definitions of "right", so I will give you antonyms for each. If you mean "right" as a direction (for example, turn right at the stop sign), the opposite would be "left". If you mean "right" as a statement of truth (for example, you have the right answer), the opposite would be "wrong". If you mean "right" as a privilege (for example, the right to freedom of speech), the opposite would be "prohibition".
Because we can't see the image you're referring to, we can't give the answer to which ray is opposite to BA. However, we can help. Opposite rays are two rays that both start from a common point and go off in exactly opposite directions. So, if there are two rays (BA and BC) with a common endpoint (B) going in different directions, they are called opposite rays.
Go
stop, halt
Go, start, continue, carry on, probably more with a similar opposite meaning.
Initiate mean to "start" so the opposite would be to halt or stop.
The exact opposite of the term "to start" can be to stop, to pause for a certain period of time or forever. It can also be not to do anything, it will always vary depending on the main purpose of the sentence.
The opposite of the noun start would be the end, finish, or completion.The opposite of the verb start (begin) would be to end, finish, or conclude.From a standpoint of performing an action, the opposite can be stop.Finish
The start bit in serial communication is opposite polarity puls than the stop bit depending on the system the start bit for instance is a positive puls (high) and the stop bit will be a negative puls (low)
stop
stop
stop
go
The opposite of "starre" is likely "end," "finish," or "stop."