A disease or diseases, or adventitious circumstances or conditions, coexistent with and modifying a primary disease, but not necessarily connected with it.
A person who doesn't fit in with the main scheme of things; an interloper.
The state of being complicated; intricate or confused relation of parts; complexity.
The act or process of complicating.
A feature beyond basic time display in a timepiece.
A potential, unsuspected, hidden problem, hazard, or danger that is easily encountered but not immediately obvious.
A type of trap consisting of a concealed pit in the ground, which the victim is supposed to fall into and not be able to get out from.
An antipattern.
Subsidence below ground in a mine, which can cause the ground level above to drop.