thickenen

== Middle English == === Alternative forms === þicken, þickenen, þiknen === Etymology === From thikke +‎ -enen. === Pronunciation === IPA(key): /ˈθikənən/, /ˈθiknən/ === Verb === thickenen To coagulate, solidify, increase in viscosity, cause to be thick ==== Conjugation ==== ==== Descendants ==== English: (to) thicken ==== References ==== “thikkenen, v.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007, retrieved 27 March 2018.