More tense in early November; ruler twice comes around six (7)
I believe the answer is:
nervier
'more tense' is the definition.
('nervy' can be similar in meaning to 'tense')
'early november ruler twice comes around six' is the wordplay.
'early' indicates taking the first letters (I've seen 'earliest of' mean this).
'ruler' becomes 'ER' (abbreviation for Elizabeth Regina).
'twice' shows that letters should be duplicated.
'comes around' means one lot of letters goes inside another.
'six' becomes 'VI' (Roman numerals).
The initial letter of 'november' is 'n'.
'er' duplicated is 'erer'.
'n'+'erer'='nerer'
'nerer' enclosing 'vi' is 'NERVIER'.
'in' acts as a link.
(Another definition for nervier that I've seen is " More anxious".)