Stolid—stŏl´id, not stō´lid. Stupid; dull.
Stratum—strā´tum, not străt´um. Strata (strā´ta), the Latin plural is used much more than the English stratums. Errors like "a strata of gravel," are also not infrequently heard.
Strategic—stra-tē´jik, not străt´e-jĭk. Strategical (stra-tē´ji-cal) and strategist (străt´e-jist). Worcester gives stra-tĕj´ic and stra-tĕj´i-cal.
Strum or Thrum should be used, and not drum, when the noisy and unskillful fingering of a musical instrument is meant.
Stupendous—stu-pen´dŭs, not stu-pĕn´jŭs nor stu-pĕn´de-us.
Suavity—swăv´ĭ-ty, not swäv´ĭ-ty nor suăv´i-ty.
Subtraction, not substraction, when the act of deducting is meant. Substraction is a law term meaning the withholding of some right, for which, however, the word subtraction is also used. Subtract, not substract.
Subtile—sŭb´tĭl, not sŭt´tle.
Subtle—sŭt´tle, not sŭb´tle.
Suffice—sŭf-fīz´, not sŭf-fīs´.