Answer:

synergy

Answer	Crossword Clue
SYNERGY	Cooperative action
SYNERGY	Supposed benefit of merging companies
SYNERGY	Positive result of working together

SYNERGY	Collaboration
SYNERGY	Cooperation
SYNERGY	Cooperative action, as of muscles
SYNERGY	Conglomerate's concern
SYNERGY	Concerted action
SYNERGY	Effective cooperation
SYNERGY	Merger goal
SYNERGY	Boardroom buzzword

SYNERGY	Combined action of two or more drugs.
SYNERGY	Combined action.
SYNERGY	Cooperative interaction
SYNERGY	Hoped-for result of a merger
SYNERGY	Coaction
SYNERGY	Working well together
SYNERGY	Hoped-for collaboration result
SYNERGY	Result of a merger, hopefully

SYNERGY	Intended result of corporate mergers
SYNERGY	Cooperation between groups
SYNERGY	Jargony rationale for a business merger