Article about English verb thesis misjudged poem with notorious verb (14)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

THE (the definite article), around an anagram (misjudged) of E (abbreviation for English) + VERB THESIS . Title of a poem by Philip Larkin (the phrase is a quotation from another poem by Robert Louis Stevenson). Phi is referring to the “notorious” first line of the Larkin poem, which uses the F-word as a verb.