1) Alter 2) Attune 3) Cause to sense 4) Change 5) Make sensitive 6) Make sensitive or aware 7) Modify 8) Sensibilise 9) Sensibilize 10) Sensify 11) Sensitise 12) To make emotionally receptive Found on https://www.crosswordclues.com/clue/sensitize
Sen'si·tize transitive verb (Photog.) To render sensitive, or susceptible of being easily acted on by the actinic rays of the sun; as, sensitized paper or plate. Found on http://www.encyclo.co.uk/webster/S/67
[v] - cause to sense 2. [v] - make sensitive to a drug or allergen 3. [v] - make (a material) sensitive to light, often of a particular colour, by coating it with a photographic emulsion 4. [v] - make sensitive or aware Found on http://www.webdictionary.co.uk/definition.php?query=sensitize