drag

[1]	pull , draw , haul , tow , tug , trail , lug
[2]	pull , distract , draw , induce , persuade , coax , wheedle
[3]	trudge , slog , crawl , creep , inch , shuffle , shamble
[4]	trail (behind) , linger , dawdle , lag (behind) , straggle , draggle , potter , loiter , poke (along) , dilly-dally , (US) lallygag
[5]	(be) prolong(ed) , (be) extend(ed) , (be)draw(n) out , (be) protract(ed) , (be) stretch(ed) out , spin out/be spun out
[6]	drag one's feet/heels , delay , procrastinate , hang back , obstruct , block , stall
[7]	hale , cart
[8]	embroil , tangle , sweep , sweep up , drag in
[9]	get behind , drop behind , drop back
[10]	puff
[11]	scuff
[12]	dredge
[13]	drag on , drag out

[1]	retarding force
[2]	puff , pull
[3]	bore , nuisance , annoyance , pest , (Colloq) drip , pain (in the neck) , headache