rubicund

Red or reddish.

ruderal

Growing in waste places, disturbed land, or poor soil.

rumption

An uproar or commotion.

rupestrian

Relating to, composed of, or carved on rocks.

rurban

Having characteristics of both rural and urban life.

rusticate

1. To go to or live in the country.

rutilant

Glowing, shining, or glittering with a red or golden light.

saber-rattling or sabre-rattling

Threatening words or action, for example, in the form of a flamboyant display of military power.

sabotage

To disrupt, damage, or destroy, especially in an underhanded manner.

saboteur

One who disrupts, damages, or destroys, especially in an underhanded manner.

sacre bleu or sacré bleu

An expression of surprise, dismay, annoyance, etc.

sad sack

A well-meaning but hopelessly inept person.

safari

An expedition to observe (or, in the past, to hunt) wild animals in their natural habitat.

salvific

Having the power to save or redeem.

sanguinolency

Addiction to bloodshed.

sansculotte or sans-culotte

A radical or revolutionary.

sarcophagus

A stone coffin, often inscribed or decorated.

saturnalian

Marked by unrestrained revelry, overindulgence, licentiousness, etc.

savvy

To understand or know.

scaldabanco

A fiery speaker, especially a preacher.

scamander

To take a winding course.

scansorial

Related to climbing.

Scarborough warning

A very short notice or no notice.

scattergood

One who spends wastefully.

scend or send

To rise or lift by, or as if by, a wave.

scepter or sceptre

A wand held by a sovereign as an emblem of authority and power.

sciamachy or sciomachy

A mock fight or a fight with an imaginary enemy.

scow

A flat-bottomed boat with square ends.

scraunch or scranch

To crunch, crush, or grind.

scrooch

To crouch or huddle.

scroop

To make a scraping or grating sound.

scunner

To disgust or sicken.

secular

1. Relating to worldly rather than religious matters.

secundan

Occurring every other day.

seemly

1. In a pleasing manner.