rhachitomous
Having a large, dorsal, crescentic intercentrum, and a small, dorsal, paired pleurocentrum.

richer
comparative form of rich: more rich.

richest
superlative form of rich: most rich

rife
Widespread, common, prevalent, current (mainly of unpleasant or harmful things).
Abounding; present in large numbers, plentiful.
Full of (mostly unpleasant or harmful things).
Having power; active; nimble.

rifer
comparative form of rife: more rife

rifest
superlative form of rife: most rife

righteous
Free from sin or guilt.
Moral and virtuous, perhaps to the point of sanctimony.
Justified morally.
Awesome; great.
Major; large; significant.

rightwise
Obsolete spelling of righteous .

robust
Able to withstand adverse conditions.
Evincing strength and health; strong; (often, especially) both large and healthy.
Requiring strength or vigor.
Sensible (of intellect etc.); straightforward, not given to or confused by uncertainty or subtlety.
Rough; rude.
Designed or evolved in such a way as to be resistant to total failure despite partial damage.
Resistant or impervious to failure regardless of user input or unexpected conditions.
Not greatly influenced by errors in assumptions about the distribution of sample errors.
Of an individual or skeletal element: strongly built; muscular; not gracile.

robuster
comparative form of robust: more robust

robustest
superlative form of robust: most robust

roial
Archaic spelling of royal.

roiall
Obsolete form of royal.

rolly
Rolling; having the ability to roll, usually due to wheels attached on the bottom.
Rough, turbulent, characterized by large or rapid waves.

rounder
comparative form of round: more round

roundest
superlative form of round: most round

royal
Of or relating to a monarch or his (or her) family.
Having the air or demeanour of a monarch; illustrious; magnanimous; of more than common size or excellence.
In large sailing ships, of a mast right above the topgallant mast and its sails.
Free-for-all, especially involving multiple combatants.
Used as an intensifier.
Describing a piece which, if captured, results in loss of game.

royaler
comparative form of royal: more royal

royalest
superlative form of royal: most royal

royall
Obsolete form of royal.

royaller
comparative form of royal: more royal

royallest
superlative form of royal: most royal

royalls
plural of royall

rubiaceous
Of or pertaining to the large and diverse family of flowering plants known as Rubiaceae.

rumptious
Of a person's buttocks: large, well-shaped.

saccharine
Of or relating to sugar; sugary.
Containing a large or excessive amount of sugar.
Excessively sweet in action or disposition, especially if romantic or sentimental to the point of ridiculousness; sickly sweet, syrupy.
Resembling granulated sugar; saccharoid.

saccharines
plural of saccharine

safe
Not in danger; out of harm's reach.
Free from risk.
Providing protection from danger; providing shelter.
When a batter successfully reaches first base, or when a baserunner successfully advances to the next base or returns to the base he last occupied; not out.
In a location that renders it difficult to pot.
Properly secured.
Not susceptible to a specified source of harm.
Great, cool, awesome, respectable; a term of approbation, often as interjection.
Supported by evidence and unlikely to be overturned. Usually used in the negative, as unsafe.
Lenient, usually describing a teacher that is easy-going.
Reliable; trusty.
Certain; sure.
Cautious.
Of a programming language, type-safe or more generally offering well-defined behavior despite programming errors.

safehaven
Alternative form of safe haven.

safehavens
plural of safehaven

safer
comparative form of safe: more safe

safest
superlative form of safe: most safe

sappier
comparative form of sappy: more sappy

sappiest
superlative form of sappy: most sappy

sappy
Excessively sweet, emotional, nostalgic; cheesy; mushy. (British equivalent: soppy)
Having (a particularly large amount of) sap.
Juicy.
Spongy; Having spaces in which large quantities of sap can flow.

scanter
comparative form of scant: more scant

scantest
superlative form of scant: most scant

scopeful
Affording a wide prospect or great opportunities.

scopefuls
plural of scopeful

scripturient
Inclined to write a great deal.

searchless
Impossible to be searched; inscrutable; impenetrable.
Vast; Too massive or great to be fully known.
That arrives at a solution by analytic means, rather than by trial and error or iterative searching.

seely
Alternative form of sely or silly.

seismic
Related to, or caused by an earthquake or other vibration of the Earth.
Subject to earthquakes.
Of very large or widespread effect.

seismostratigraphy
Synonym of seismic stratigraphy.

seleucid
Any member of the Seleucidae.

sely
Obsolete form of silly, especially in its older senses like "innocent", "pitiable, poor", "trifling, insignificant", but also "foolish".

semiample
Having a positive multiple that is generated by global sections.

sensational
Of or pertaining to sensation.
Piquing or arousing the senses.
Provoking a reaction of interest or excitement.
Exceptionally great.

sensative
Archaic form of sensitive.

sensitive
Having the faculty of sensation; pertaining to the senses.
Responsive to stimuli.
Easily offended, upset, or hurt.
Capable of offending, upsetting, or hurting.
Meant to be concealed or kept secret.
Being aware of the feelings of others and taking care not to offend them.
Important, intricate, and requiring great delicacy.
Accurate; able to register small changes in some property.
Having paranormal abilities that can be controlled through mesmerism.

sesquiduplicate
Two and a half times as large; having the ratio of 2.5 to 1.

sextastic
great, with regards to sex

shaftie
Alternative form of shafty.

shaftier
comparative form of shafty: more shafty

shafties
plural of shaftie
plural of shafty

shaftiest
superlative form of shafty: most shafty

shafty
Having long and dense fibres.
Powerful, cool
Well-endowed; having a large penis.
Having visible feather shafts.

shitbeast
A contemptible, unpleasant individual.
A dog, seen as fetid and disgusting.

shoulderful
As much as can be carried or worn on one's shoulder.
An amount that reaches as high as the shoulder.
As much as a metaphoric shoulder can handle; a personal burden.

significant
Signifying something; carrying meaning.
Having a noticeable or major effect.
Reasonably large in number or amount.
Having a covert or hidden meaning.
Having a low probability of occurring by chance (for example, having high correlation and thus likely to be related).
Of a digit or figure, see significant figure.

significants
plural of significant

sillier
comparative form of silly: more silly

sillies
plural of silly
A period of foolish behaviour.

silliest
superlative form of silly: most silly.

silly
Laughable or amusing through foolishness or a foolish appearance.
Laughable or amusing through foolishness or a foolish appearance.
Blessed
Blessed
Pitiful, inspiring compassion, particularly
Pitiful, inspiring compassion
Pitiful, inspiring compassion
Pitiful, inspiring compassion
Pitiful, inspiring compassion
Pitiful, inspiring compassion
Simple, plain
Simple, plain
Mentally simple, foolish
Mentally simple, foolish
Mentally simple, foolish
Mentally simple, foolish
Very close to the batsman, facing the bowler; closer than short.

sizable
Fairly large.

sizeable
Standard spelling of sizable.

skil
Obsolete spelling of skill.

skiller
comparative form of skill: more skill

skillest
superlative form of skill: most skill

skillo
great, excellent

skimobile
snowmobile

skookum
Excellent, impressive.
Big, strong, durable, reliable, trustworthy, doughty.

skookums
plural of skookum