mimetic reduplication for emphasis

Repeating a mimetic word twice (ちんたらちんたら, ふらふらふらふら) to intensify its meaning. The extra reduplication amplifies the quality described — 'very sluggishly,' 'really staggering.' Distinct from the basic mimetic reduplication (にこにこ, ぴかぴか) that simply forms the mimetic in the first place.