errant — English Dictionary

Adjective

1. Straying from the proper course or standard, or outside established limits.

   Examples

   In that there are just seven Planets or errant Stars in the lower Orbs of heaven: but it is now demonstrable unto sense, that there are many more

   More examples (1)

   They were all doomed to be disappointed, however, for the errant engine decided at Stanley junction to spend the remainder of its crowded hour of freedom on the Aberdeen line, and finally came to rest, short of breath, in the dip between Ballathie and Cargill, near the bridge over the Tay.

   It's quite apparent / Your grammar's errant / You're incoherent

2. Roving around; wandering.

3. Prone to erring or making errors; misbehaving.

   Examples

   We ran down the street in pursuit of the errant dog.

Noun

1. A knight-errant.

Adjective

1. straying from the right course or from accepted standards

   Examples

   errant youngsters

2. uncontrolled motion that is irregular or unpredictable

   Examples

   an errant breeze