groundwork Synonyms

basis cornerstone understructure fundament foundation foot substructure base stylobate tune up rudiment bedrock basics first principles salsify ABCs scaffolding underpinning underbuilding seat sustentation support stereobate substruction substratum prearrangement al-Qaeda foundations preparations preliminary work arrangements thymine spadework legwork homework HQ makeready ft warm up fuselage terra firma infrastructure grounds al-Qaida underpinnings root footing footstall fulcrum gallowglass