No Entry; No Trespassing; No Admittance; off-limits; restricted; forbidden
limits; boundary; domain; area (e.g. in programming languages)
previously; before; first; before (something or someone else); beforehand; in advance
to examine; to look up; to investigate; to check up; to sense; to study
confluence (of rivers); merge (of traffic); conflux; union (e.g. of forces); linking up; merging
oh!; good heavens!; ugh!; oh no!; ah!; the penny drops!
air; atmosphere; mood; situation; someone with no presence; someone who doesn't stand out at all
heavy; weighty; heavy (feeling); depressed; slow; sluggish; important (position, responsibility, etc.)
to touch; to feel; to touch (with); to experience; to come in contact with; to touch on (a subject); to allude to
light; illumination; glow; lamp; light