speculate v. to meditate on a subject; reflect; to engage in a course of reasoning often based on inconclusive evidence; to engage in the buying or selling of a commodity with an element of risk on the chance of profit

spoil v. to impair the value or quality of; to damage irreparably; ruin; to impair the completeness, perfection, or unity of; flaw grievously; to do harm to the character, nature, or attitude of by over-solicitude, overindulgence, or excessive praise

sponsor n. one who donates money; person or organization that promotes or supports (an event, program, candidate, etc.); godparent

sponsor v. to back; to support; to finance; to subsidize; to promote

sporadic adj. irregular; fitful; occasional; infrequent

sprinkle n. the act of sprinkling; a light rainfall; a small amount; a sprinkling

sprinkle v. to scatter in drops or particles; to scatter drops or particles on; to distribute or intersperse at random

square adj. having four equal sides enclosing four equal angles; shaped like a square; perpendicular; aligned; sturdy; fair; honest; settled; even

square n. geometric figure having four equal sides; something shaped like a square; open area in a town or city; plaza; exponent of 2; tool with straight edges and a right angle

stable adj. steady; firm; fixed; lasting; dependable; faithful; not susceptible to change

stack n. heap; tall bookshelf; chimney; (Computers) area in memory where information can be stored and then retrieved in the reverse order; (Internet) layers of the open system interconnection used to transfer information

stack v. to place one thing on top of another in a heap; to pile

staff v. to employ a group of workers; to provide with employees; to man

stagnant adj. not moving or flowing; motionless; showing little or no sign of activity or advancement; not developing or progressing; inactive; lacking vitality or briskness; sluggish or dull

stake v. to risk; to gamble; to finance; to underwrite; to mark off a boundary using stakes; to tie to a stake

stall n. stand; booth; pen; compartment in a stable for an animal; pretext to delay; protective covering for a finger; (Airplanes) loss of control; loss of lift; (British) orchestra seats

stall v. to put into a stable; to delay; to check the progress of; to cause to stop; to cause to turn off (of a motor)

stance n. physical position or bearing; opinion; attitude

stand out v. to be conspicuous; to be noticeable; to project; to protrude; to persist in one's opposition to something; to maintain an offshore course (Nautical)

standard adj. serving as a model; normal; regular; typical; widely accepted

standard n. model; criterion; norm; average; flag; banner; commodity which backs a monetary system

standpoint n. outlook; perspective; view; opinion; attitude

staple adj. essential; regularly used; primary; principal; main (of goods or products)

staple n. metal clip for binding papers; basic food item; essential element; main crop or product of a region; trade item that is constantly in demand; fiber (of wool, cotton, etc.)

startle v. to cause to make a quick involuntary movement or start; to alarm, frighten, or surprise suddenly

statement n. declaration; allegation; official account; printed record of account activity; instruction written in a high-level programming language (Computers)

stationary adj. not moving; still; fixed in place; not movable; static; unchanging; settled; tending to stay in one place

stationery n. writing implements; paper used for writing letters

statistical adj. of, relating to, or employing statistics or the principles of statistics

statistics n. branch of mathematics that deals with the collection and interpretation of numerical information

status n. individual's social or professional standing; position; rank; state of things; present situation

steadfast adj. loyal; faithful; unchanging

stingy adj. giving or spending reluctantly; scanty or meager

stipendiary adj. receiving of a regular or fixed payment; of or pertaining to a stipend

stipulate v. to require that certain conditions be met before the signing of a contract; to specify; to require; to promise; to guarantee (regarding a contract)

straightforward adj. frank; candid; sincere; honest; simple; uncomplicated; traveling in a straight course

strap v. to fasten with a strap; to tie with a narrow piece of leather; to beat with a strap; to lash

strategy n. plans or methods created for the purpose of achieving a goal; science of preparing long-term battle plans (Military)

streamline n. path along which a fluid flows; direction in which a particle flows (i.e. in a fluid); aerodynamic shape

streamline v. to design or build in a form which offers minimum resistance to a current of air or fluid; to make more efficient; to organize; to simplify

strengthen v. to make strong; to fortify; to reinforce; to toughen; to become strong

stretch v. to draw out to the full length; to extend; to elongate; to be extended; to reach out; to pull; to make taut; to strain; to be pulled; to be elongated; to lie down; to extend over a certain period of time; to span

strike n. hit; blow; temporary work stoppage; military assault; good luck; discovery of natural resources; knocking down of all pins at one time (Bowling); failure to hit a ball (Baseball)

strike v. to hit; to collide with; to attack; to assault; to afflict with a disease; to injure by biting; to impress; to produce a spark; to stamp; to eliminate; to arrive at; to reach; to instill; to temporarily cease working as a protest; to make

striped adj. marked with narrow bands of contrasting color or texture

strive v. to endeavor; to try hard; to compete; to struggle; to resist

stuffy adj. lacking sufficient ventilation; close; having the respiratory passages blocked; dull and boring

stumble n. the act of stumbling; a mistake or blunder

stumble v. to miss one's step in walking or running; trip and almost fall; to proceed unsteadily or falteringly; flounder; to make a mistake; blunder

subconscious adj. not wholly conscious; partially or imperfectly conscious

subdue v.to conquer and subjugate; vanquish; to quiet or bring under control by physical force or persuasion; make tractable; to make less intense or prominent; tone down

subjectively adv. based on individual thoughts and feelings

submission n. the act of submitting to the power of another; the state of being submissive or compliant; meekness

submissive adj. inclined or willing to submit

subordinate adj. inferior; of secondary importance; under the authority of another

subordinate n. one who is subservient; someone under the authority of another; one that is subjugated