base

[1]	establish , found , secure , build , ground , anchor , fix , hinge , form , derive , draw
[2]	establish , headquarter , post , station , position , place
[3]	establish , ground , found
[4]	free-base

[1]	bottom , base of operations , foot , support , stand , pedestal
[2]	groundwork , foundation , fundament , background , fundamental principle , foot , groundwork , principle , foundation , substructure , understructure , underpinning , infrastructure , basis
[3]	root , bag , theme , radical , stem , core
[4]	home , station , camp , starting-point , point of departure , post , centre
[5]	floor
[6]	basis , foundation , fundament , groundwork , cornerstone
[7]	pedestal , stand
[8]	nucleotide
[9]	alkali
[10]	basis
[11]	radix
[12]	home
[13]	al-Qaeda , Qaeda , al-Qa'ida , al-Qaida
[14]	root , root word , stem , theme , radical
[15]	infrastructure

adj.