more often than not
Usually; more than half the time; more likely to be the case than not to be the case.
Near-synonyms: commonly, frequently; usually; see also Thesaurus:usually
adv
Frequently; many times on different occasions.
I often walk to work when the weather is nice.
I’ve been going to the movies more often since a new theatre opened near me.
adj
Frequent.
[…] it is a melancholy of mine own, compounded of many simples, extracted from many objects, and, indeed, the sundry contemplation of my travels; in which my often rumination wraps me in a most humorous sadness.
1618, Anthony Munday (translator), The Third Booke of Amadis de Gaule by Nicolas de Herberay des Essarts (1542), London, Chapter 2, p. 18, Then came the Ladies to visite him, and the Queene gaue him most gracious welcome, desiring him to be of good cheere: For heere is my Daughter (quoth she) right skilfull in the Art of Chirurgerie, that meanes to bee your often visitant.