| mutually(combined, closely, jointly, collectively) |
| on one side(expression, idiom, adverb, collectively, unitedly) |
| shoulder to shoulder(expression, idiom, adverb, collectively, unitedly) |
| side by side(expression, idiom, combined, closely, jointly) |
| simultaneously(jointly, collectively, mutually) |
| synchronically(adverb, combined, closely, jointly, collectively) |
| unanimously(combined, closely, jointly, collectively, commonly) |
| unitedly(adverb, closely, jointly, collectively, mutually) |
| with one another(expression, idiom, adverb, collectively, unitedly) |
| yardarm to yardarm(expression, idiom, adverb, collectively, unitedly) |
| close together(expression, adverb, collectively, unitedly, inseparably) |
| companionably(adverb, collectively, unitedly, inseparably) |
| connectedly(adverb, collectively, unitedly, inseparably) |
| cooperatively(adverb, collectively, unitedly, inseparably) |
| harmoniously(adverb, collectively, unitedly, inseparably) |
| inseparably(adverb, collectively, unitedly) |
| reciprocally(adverb, collectively, unitedly, inseparably) |
| synchronously(adverb, collectively, unitedly, inseparably) |
| very intimate(expression, adverb, collectively, unitedly, inseparably) |