In other words, adamant to zeitgeber

• adamant, adjective. Utterly unyielding in attitude or opinion in spite of all appeals, urgings, etc. (noun) any impenetrably or unyieldingly hard substance.
• cataract,  noun. A place in a river where the water falls to a lower level.
• chyron, noun. A digital text-based caption superimposed over usually the lower part of a video image (as during a news broadcast). Named after the Chyron Corporation, manufacturer of a character-generating device that created such captions.
• desultory, adjective. Leaping or skipping about; jumping, or passing, from one thing or subject to another.
• divagate, verb. To wander or drift about; ramble; digress; stray.
• dysania, noun. An extreme difficulty rising from bed or an inability to leave the bed.
• eidolon, noun. A likeness; phantom; apparition; a shade or specter; a confusing reflection or reflected image.
• exercise, verb. Do repeatedly, especially to improve.
• exorcise, verb. Free from evil spirits; cast out demons.
• idioglossia, noun. An invented language developed by an individual or a very small group of people (e.g.,  by children in close contact, such as twins).
• kritarchy (aka kritocracy), noun. A system of government characterized by rule by judges, especially the system of rule by Hebrew judges described in the Old Testament Bible.
• nudiustertian, adjective. Of or relating to the day before yesterday.
• pastrix, noun. Female who claims to be a pastor, a term usually used pejoratively by Christians who do not recognize female pastors, but embraced by some supporters of female pastors.
• pismire, noun. An ant; emmet.
• rückenfigur (or ruckenfigur), noun. A compositional device in painting (or photography and film) in which the subject is depicted from behind, typically facing away from the viewer to contemplate a distant scene (German, meaning “back-figure” or “figure from the back”).
• stupor, noun. The feeling of distress and disbelief that you have when something bad happens accidentally; marginal consciousness.
• telluric, adjective. Of or pertaining to the earth; proceeding from the earth.
• torpor, noun. A state of mental or physical inactivity or insensibility; the dormant, inactive state of a hibernating or estivating animal.
• veridical, adjective. Truthful; veracious; showing what is true or real.
• zeitgeber, noun. An external stimulus or cue, such as daylight or a regularly repeated occurrence, that serves to regulate an organism’s biological clock.