The phrase "a more valid reason" is correct and usable in written English.
It can be used when comparing the validity of different reasons or justifications for a particular action or decision.
Example: "While there are several reasons for the delay, I believe we need to focus on a more valid reason that addresses the core issue."
Alternatives: "a stronger justification" or "a more compelling rationale".
If there is a more valid reason why she gets under people's skin, they often struggle to articulate it.
"The weather is a perennial excuse for poor performance, but I do think that... it has become a more valid reason for [it]," says Conlumino analyst Neil Saunders.
But a more valid reason to feed coarse mix to horses than pellets is because it takes longer time to eat.
Part of that may be that I'm still in the "honeymoon" phase of disbelief that we're even seeing these things getting made, but I think another, more valid reason is simply how well the Marvel Studios operation, honchoed by uber-producer Kevin Feige, works at conceptualizing its storylines and picking the right creatives to pull them off.
In fact, I can find more valid reasons to give to the man on a street corner wearing a cardboard "homeless and hungry" sign around his neck than I can in giving to the glee club, their angelic voices serenading me as I steer my cart toward the parking lot.
The Jets at least had more valid reasons for limping through the season.
Diana, Princess of Wales, was an early advocate of the adoption of eastern costume, taking her cue from her close friend Jemima Goldsmith, who had more valid reasons to wear the shalwar kameez when she married Imran Khan, the former Pakistan cricket captain turned politician, and converted to Islam.
For the reasons outlined above and more fully elsewhere [ 12], we believe that peak HIV prevalence is a more valid indicator to assess this relationship.
Besides making societal CEA more valid, another reason why incorporating time in CEA could be relevant, is to bridge the gap between societal and local decision making.
If a tenant has a valid reason, withholding the rent can be a powerful tool.
