To have an aching TOOTH at one

Insights

Persistent Grudge

Like a toothache that throbs without cease, resentment toward a person becomes a low, constant pain that colors thought and provokes sudden flare-ups.

Pain Projected Outward

Internal discomfort seeks an external target: the proverb frames anger as a bodily ache misattributed to ‘one,’ rationalizing chastisement as pain relief.

Appetite for Retaliation

The ‘tooth’ hints at biting; the ache becomes an urge to sink one’s teeth into an opponent—an appetite not for food but for payback.

Fixation and Bias

An aching tooth commands attention; likewise, fixating on a disliked person narrows judgment, making neutral acts feel like further irritation.

Archaic usage

Early modern English freely used ‘at’ where today we say ‘against.’ Lexicographers glossed the phrase as ‘to be angry at; to have a mind to chastise,’ preserving a snapshot of period syntax and temperament.

Tooth-imagery in morals

Teeth mediate both appetite and aggression—chewing, biting, gnashing. The proverb taps this dual symbolism to render enmity as bodily sensation, making moral emotion feel tangible.

Humoral undertone

In humoral psychology, choleric heat inflames anger; the tooth’s ‘ache’ evokes heated, inflamed tissue, a somatic metaphor for quick-to-rise wrath seeking vent.

Folk pathology

Medieval–early modern lore blamed ‘tooth-worms’ for toothache. The image suits a grudge: a hidden irritant that gnaws from within, hard to pacify without extraction or reconciliation.

Cross-cultural kin

English ‘a bone to pick,’ German ‘ein Hühnchen zu rupfen’ (a chicken to pluck), and French disputes ‘avoir maille à partir’ all stage grievance as a small but nagging task to be worked through.

Rhetorical Devices

Metonymy

The ‘tooth’ stands for both bodily irritation and a biting impulse, compressing anger and aggression into a vivid concrete locus.

Somatic metaphor

Turning emotion into physical pain lends immediacy; listeners ‘feel’ the grievance rather than merely apprehend it.

Ellipsis

The object of anger is named, but the verb of rebuke is omitted, creating briskness and inviting the audience to supply the threatened action.

Alliteration

The echo in ‘tooth’ and ‘at’ (t-sounds) adds snap, while ‘aching’ supplies a moan-like assonance that sonically mirrors complaint.

Personification

The tooth ‘aches at’ someone as if it possessed intention, dramatizing the inevitability and directedness of the resentment.