under no circumstances

(cytology) A form of cell division, in cancer cells, in which genetic material from the malignant cell separates by budding from its nucleus prior to cytokinesis and the production of daughter cells

(idiomatic) A person who sits on their hands; one who dawdles or remains idle when action is needed. / (idiomatic) An unenthusiastic or unresponsive member of an audience.

plural of tritylate