1) Bootlick 2) Kneel 3) Kowtow 4) Toady 5) Trundle 1) French word used in English 2) Move on small wheels 3) Truckle bed 4) Trundle 5) Trundle bed 6) Yield to out of weakness 
A `truckle` of cheese refers to a cylindrical wheel of cheese, usually taller than it is wide, and sometimes described as barrel-shaped. The word is derived from the Latin trochlea, `wheel, pulley`. Truckles vary greatly in size, from the wax-coated cheeses sold in supermarkets, to 25 kilogram or larger artisanal cheeses. ...
to submit; to cringe
• (v. t.) To roll or move upon truckles, or casters; to trundle. • (v. i.) To yield or bend obsequiously to the will of another; to submit; to creep. • (n.) A small wheel or caster.
[v] - yield to out of weakness