at one

[OE. at on, atone, atoon, attone.]

1. In concord or friendship; in agreement (with each other); as, to be, bring, make, or set, at one, i. e., to be or bring in or to a state of agreement or reconciliation.

If gentil men, or othere of hir contree
Were wrothe, she wolde bringen hem atoon.

2. Of the same opinion; agreed; as, on these points we are at one.

3. Together. [Obs.] Spenser.

In agreement, in harmony, as in John and Pat were at one on every subject except her cat, which made him sneeze, or Springtime always makes me feel at one with nature. [1300s]