Last letter = First Letter, min 3 syllable word chain

Liguria

automatic

cattywampus

shatterproof

fastidious

sterility

yellowing

grandnephew

waterboarding

grandfather

Either the male parent of your own mother or father, or the policy by which something that already exists is exempted from having to meet newer standards or practices – take your pick.

-“BB”-

relatives

succotash

hieroglyphics

stepbrother

rehearsal

logical

lemongrass … (no, it’s not a flavored form of pot!)

-“BB”-

sisterhood

determined

duodecimal