separation; partition; detachment; segregation; isolation
spread (e.g. of a disease); rampancy; infestation; proliferation; being widespread
to drift; to float; to waft (e.g. a scent); to hang in the air; to be in the air (e.g. a feeling or mood); to wander; to walk around aimlessly
strange; odd; peculiar; queer; curious
contagious disease; communicable disease; transmissible disease; infectious disease; epidemic
offender; criminal; culprit
to determine (esp. a culprit or underlying cause); to pin down; to ascertain; (arch.) to stab to death
millions; several million; a few million
uneasy feeling; sense of anxiety; malaise
to rise; to swell; to be promoted
in; on; at (place); as for; regarding
certain; some kind of; some sort of; of sorts
proof; testimony; demonstration; verification; certification
about; roughly; generally; on the whole; completely; quite
establishing; proving; ascertaining; identifying; confirming
originator; ringleader; perpetrator; main culprit; person responsible
carcinogen; carcinogenic substance
intake (e.g. of salt); ingestion; absorption (e.g. of new knowledge); adoption (e.g. of foreign culture); reception and protection
infection; contagion; becoming infected
cancer causing; carcinogenesis
to expose to danger; to imperil; to jeopardize
individual differences; personal equation
career; carrier (disease, signal, warship, etc.); carrier; telephone company; career government employee
clinical (e.g. pathology, physiology)
possible; potential; practicable; feasible
at present; currently; so far; for now; for the time being
beyond this point; from now on; after this
guarantee; security; assurance; pledge; warranty
dreadful; terrible; horrible; fearsome; formidable; awesome
resemblance; similarity; likeness; analogy
to be born again; to make a fresh start in life
guess; speculation; supposition