Etymology
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*neu- 
Proto-Indo-European root meaning "to shout." It forms all or part of: announce; denounce; enunciate; nuncio; pronounce; renounce.

It is the hypothetical source of/evidence for its existence is provided by: Greek neuo "to nod, beckon," Latin nuntius "messenger," Old Irish noid "make known."
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*bheudh- 

Proto-Indo-European root meaning "be aware, make aware."

It forms all or part of: beadle; bid; bo tree; bode; Bodhisattva; Buddha; forbid; foreboding; ombudsman; verboten.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit bodhati "is awake, is watchful, observes," buddhah "awakened, enlightened;" Old Church Slavonic bljudǫ  "to observe;" Lithuanian budėti "to be awake;" Old Irish buide "contentment, thanks;" Old English bodian "proclaim, announce; foretell," boda "messenger."

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*kele- (2)
*kelə-, Proto-Indo-European root meaning "to shout." Perhaps imitative.

It forms all or part of: acclaim; acclamation; Aufklarung; calendar; chiaroscuro; claim; Claire; clairvoyance; clairvoyant; clamor; Clara; claret; clarify; clarinet; clarion; clarity; class; clear; cledonism; conciliate; conciliation; council; declaim; declare; disclaim; ecclesiastic; eclair; exclaim; glair; hale (v.); halyard; intercalate; haul; keelhaul; low (v.); nomenclature; paraclete; proclaim; reclaim; reconcile.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit usakala "cock," literally "dawn-calling;" Latin calare "to announce solemnly, call out," clamare "to cry out, shout, proclaim;" Middle Irish cailech "cock;" Greek kalein "to call," kelados "noise," kledon "report, fame;" Old High German halan "to call;" Old English hlowan "to low, make a noise like a cow;" Lithuanian kalba "language."
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