1. (a.) 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.

2. (a.) of the same opinion; agreed; as, on these points we are at one.

3. (a.) Together.

accordant affirmative agreeable agreeing akin amicable answerable at one with attuned carried by acclamation coexistent coexisting coherent coincident coinciding commensurate compatible concordant concurrent concurring conformable congenial congruent congruous consentaneous consentient consistent consonant cooperating cooperative correspondent corresponding empathetic empathic en rapport equivalent frictionless harmonious in accord in agreement in concert in rapport in sync in synchronization in tune inaccordance inharmony like-minded of a piece of like mind of one accord of one mind on all fours peaceful positive proportionate reconcilable self-consistent solid symbiotic sympathetic synchronized synchronous together unanimous unchallenged uncontested uncontradicted uncontroverted understanding uniform unisonant unisonous united unopposed with one consent with one voice