Foundation
Base
Synonyms: Footing, base, understructure, bottom, substratum, foot, substructure, underpinning, and bedrock.
Beginning
Synonyms: Basis, base, beginning, fundamental point/principle, main ingredient, fundamentals, cornerstone, heart, essence, nub, groundwork, starting point, point of departure, premise, principal constituent, principles, rudiments, core, thrust, kernel, and underpinning.
Defence
Synonyms: Justification, defence, cause, mitigation, explanation, basis, motivation, call, provocation, grounds, reason, mitigating circumstances, extenuation, occasion, motive, excuse, and pretext.
Starting
Synonyms: Founding, setting up, initiation, forming, launch, origination, inauguration, endowment, establishing, starting, institution, creation, flotation, development, and constitution.
Example Sentences
Trust is the relationship’s foundation.
Education is the foundation of success.
The building’s foundation was strong.
Honesty forms the foundation here.