strife (n.)
striving, endeavour, strong effort
AW Epilogue.4 [King to all] we will pay / With strife to please you
MM III.ii.222 [Escalus to disguised Duke, of the Duke] One that, above all other strifes, contended especially to know himself
RJ II.ii.152 [Juliet to Romeo] I do beseech thee ... / To cease thy strife and leave me to my grief
Tim I.i.38 [Poet to Painter, of someone in his picture for Timon] Artificial strife / Lives in these touches livelier than life