Sapio, I taste or am wise; sapient, insipid, savour.
Scando (scans-um), I climb; scala, a ladder; scan, scale, ascension, descend.
Scio, I know; science, scientific, conscience, omniscient.
Scribo (script-um), I write; scribe, scripture, manuscript, describe.
Seco (sect-um), I cut; dissect, insect, segment, section.
Sedeo (sess-um), I set; sediment, subside, residence.
Senex, an old man; senile, senior, senate, senator.
Sentio (sens-us), I feel or perceive; sense, sentimental.
Septem, seven; septennial, September.
Sequor (secūt-us), I follow; sequel, consecutive, consequent.