singly Antonyms

multiply in concert in cahoots hand in hand hand in glove hand and glove concertedly complementarily communally collaboratively cheek by jowl as one man as one in one breath in league relatedly with each other in alliance in cooperation in combination in collaboration in partnership in conjunction synergistically shoulder to shoulder in tandem in a group in unison adjuvantly cooperatively bilaterally coordinately contemporaneously conjunctly conjunctively conjugally conjointly concordantly collectively coincidently both altogether alike incidently jointly simultaneously at the same time all together all at once en masse