PRESENTATION OUTLINE
Sediment:matter that settles to the bottom of a liquid; dregs.
synonyms: dregs, lees, precipitate, deposit, grounds;
sedate:
calm, dignified, and unhurried.
synonyms: slow, steady, dignified, unhurried, relaxed, measured, leisurely, slow-moving.
sedentary:
(of a person) tending to spend much time seated; somewhat inactive.
synonyms: sitting, seated, desk-bound, stationary; More
antonyms: active
Supersede:
take the place of (a person or thing previously in authority or use); supplant.
synonyms: replace, take the place of, take over from, succeed;