(chemistry) An aromatic amine, CF₃C₆H₄NH₂, used in the production of the herbicide fluometuron.

(biology, of a host) antagonistic to the metabolism of a parasite

(transitive) To increase or to succeed at a rate lower than (something else). / (transitive) To follow (someone) slowly, usually surreptitiously.

simple past tense and past participle of upface