Verb

(en verb)

To utter words, especially complaints or angry expressions, indistinctly or with a low voice and lips partly closed; to say under one's breath.

You could hear the students mutter as they were served sodden spaghetti, yet again, in the cafeteria.

The beggar muttered words of thanks, as passersby dropped coins in his cup.

* {{quote-news

, year=2012 , date=June 28 , author=Jamie Jackson , title=Wimbledon 2012: Lukas Rosol shocked by miracle win over Rafael Nadal , work=the Guardian citation , page= , passage=This set – the set of Rosol's life – was studded with aces and menacing ground-strokes that left Nadal an impotent spectator often muttering to himself and at the umpire regarding a perceived misdemeanour by his opponent.}}

To speak softly and incoherently, or with imperfect articulations.

The asylum inmate muttered some doggerel about chains and pains to himself, over and over.

* Dryden

Meantime your filthy foreigner will stare, / And mutter to himself.

To make a sound with a low, rumbling noise.

April could hear the delivery van's engine muttering in the driveway.

* Alexander Pope

Thick lightnings flash, the muttering thunder rolls.

Verb

(en verb)

To make a loud, deep cry, especially from pain, anger, or other strong emotion.

* Dryden

Sole on the barren sands, the suffering chief / Roared out for anguish, and indulged his grief.

To laugh in a particularly loud manner.

The audience roared at his jokes.

Of animals (especially the lion), to make a loud deep noise.

* Spenser

Roaring bulls he would him make to tame.

Generally, of inanimate objects etc., to make a loud resounding noise.

* Milton

The brazen throat of war had ceased to roar .

* Gray

How oft I crossed where carts and coaches roar .

(figuratively) To proceed vigorously.

* {{quote-news, year=2011, date=January 25, author=Phil McNulty, work=BBC

, title= Blackpool 2-3 Man Utd , passage=United's attempt to extend their unbeaten league sequence to 23 games this season looked to be in shreds as the Seasiders - managed by Ian Holloway - roared into a fully deserved two-goal lead at the interval. }}

To cry aloud; to proclaim loudly.

* Ford

This last action will roar thy infamy.

* , chapter=7

, title= Mr. Pratt's Patients , passage=I made a speaking trumpet of my hands and commenced to whoop “Ahoy!” and “Hello!” at the top of my lungs. […] The Colonel woke up, and, after asking what in brimstone was the matter, opened his mouth and roared “Hi!” and “Hello!” like the bull of Bashan.}}

To be boisterous; to be disorderly.

* Bishop Burnet

It was a mad, roaring time, full of extravagance.

To make a loud noise in breathing, as horses do when they have a certain disease.