The /r/ sound is spelled with <r> or <wr>.
The /r/ sound occurs initially and medially though not finally. It enters consonant clusters fairly freely. In some case changes of stress make the pairs not quite minimal. This is certainly true when one removes a syllabic /r/ as in archery/Archie or sufferer/suffer, and these items have been listed separately at the end. Another special case is the pair overate/overrate. Here we have lost one /r/ but a linking /r/ remains. For many speakers this would be a homophone pair, though in careful speech one might make and perceive a difference.Taboo word pairs include crap/cap and croon/coon.
The density value is 4.4%.
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feed freeze fees freight fate freights fates freighted fated friction fiction frictions fictions friend fend friends fends frieze fees fright fight frights fights frill fill frills fills frilly filly fritter fitter fritters fitters frizz fizz frizzes fizzes frizzing fizzing frizzed fizzed frizzle fizzle frizzles fizzles frizzling fizzling frizzled fizzled frizzy fizzy fro foe frocks fox frog fog frogs fogs frond fond froze foes fry fie fryer fire fryers fires grab gab grabs gabs grabbing gabbing grabbed gabbed grail gale grails gales grain gain grains gains grained gained grander gander grape gape grapes gapes grasp gasp grasps gasps grasping gasping grasped gasped grate gate grates gates grating gating grated gated grater gaiter graters gaiters grave gave gravel gavel gravels gavels gray gay grayer gayer grayest gayest grays gays grays gaze graze gaze grazes gazes grazing gazing grazed gazed grease geese great gate greats gates greater gaiter Greece geese Greek geek Greeks geeks grew 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Syllabic /r/ versus null:
archery Archie Barbara barber battery batty cannery canny cattery catty chancery chancy cookery cookie flattery flattie gallery galley mystery misty offering offing pottery potty psaltery salty rockery rocky slippery slippy sufferer suffer
Credit: John Higgins