9 letters

Zyrardów Changchow Chengchow Creepshow supershow ∙ aftershow ∙ floorshow ∙ whiteblow peachblow ∙ deathblow ∙ shellblow afterblow handyblow Intraflow earthflow multiflow Underflow ∙ Interflow ∙ Crossflow alpenglow ∙ underglow afterglow ∙ Nightglow ∙ twifallow allhallow dishallow ∙ mackallow reswallow ∙ upswallow outbellow oddfellow bedfellow ∙ pewfellow wayfellow pinpillow ultraslow ∙ barleymow interknow mudminnow topminnow ∙ scarecrow ∙ gallycrow Groundrow undergrow intergrow ∙ windthrow ∙ downthrow ∙ overthrow ∙ backarrow prebestow misbestow ∙ snarleyow kabeljouw ∙

10 letters

wapenschaw ∙ wapinschaw ∙ piankashaw wappenshaw ∙ weaponshaw Robertshaw whillywhaw ∙ counterlaw rewithdraw broomstraw quartersaw ∙ featherfew stepnephew pandlewhew houghsinew thumbscrew ∙ drivescrew hardishrew understrew Biserratew bullamacow Longmeadow Windshadow foreshadow ∙ overshadow ∙ grasswidow superendow shopwindow ∙ Linlithgow weaponshow Horrorshow Anitschkow contraflow ∙ streamflow reoverflow preswallow clubfellow roadfellow goodfellow ∙ Yokefellow ∙ workfellow ∙ clanfellow boonfellow playfellow ∙ overmellow overbillow overhollow breastplow middlebrow ∙ handbarrow ∙ hackbarrow hurlbarrow ∙ restharrow ∙ overnarrow overborrow ∙ oversorrow backfurrow snarleyyow

11 letters

wappenschaw ∙ jinrickshaw ∙ clapperclaw ∙ counterdraw ∙ windlestraw ∙ grandnephew ∙ reinterview ∙ counterview ∙ bartholomew splinternew Chunderspew Bottlescrew counterdrew ∙ multiwindow ∙ Changkiakow counterblow ∙ hereinbelow ∙ Throughflow counterflow ∙ counterglow ∙ Marshmallow ∙ Woodswallow ∙ tablefellow shelffellow coachfellow benchfellow blackfellow underfellow townsfellow classfellow thoftfellow underbillow throughknow throughgrow trackbarrow Wheelbarrow ∙ cocksparrow superborrow underfurrow

12 letters

autorickshaw ∙ preinterview ∙ preoverthrew cradlefellow schoolfellow ∙ preoverthrow

13 letters

clappermaclaw superbungalow chamberfellow

Words with a ∙ are valid Scrabble words (SOWPODS word list)