Drill
At random
Colleague
Plausible
Disguise
Overt
Fulfill
Significance
Sufficient
occurring or done without definite aim, reason, plan, or pattern.
a fellow member of a profession; an associate.
to carry out or bring to realization.
to change the appearance of so as to mislead.
enough for what is needed.
to make (a hole) by penetrating or boring.
open to view or knowledge; not hidden or secret.
Something important
having an appearance of truth or reason; seemingly worthy of approval or acceptance; credible.
