ANT: Blunder, defeat, mismanoeuvre, miscontrivance, mismanagement.

=

KEY: Stray.

SYN: Wander, deviate, digress, ramble, go astray, err, depart, rove.

ANT: Adhere, abide, stick.

=

KEY: Stream.

SYN: Current, course, flow, exit, drift, tide, tendency.

ANT: Stagnation, desistance, arrestation, station, standstill, stillness, halting, cessation, stopping, interruption.

=