Related to tenacious

Drainage system means one or more artificial ditches, tile drains or similar devices which collect surface runoff or groundwater and convey it to a point of discharge.
Gasohol means a blended fuel composed of gasoline and fuel grade ethanol.
aerodrome means a defined area on land or water (including any buildings, installations and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of aircraft;
Sailboat means the same as that term is defined in Section 73-18-2.
Holocene means the most recent epoch of the Quaternary period, extending from the end of the Pleistocene Epoch to the present.

tenacious definition