- pro ratad
- pro rata'd
- pro rataed
I considered them all, but they all seemed ugly and potentially jarring, so I advised the staff member to recast the sentence: for example, instead of writing 'the company pro ratad the salary', she should write 'the company paid the salary pro rata' (or, '...on a pro rata basis'). However is this a sufficient reason not to verb something – because it looks 'ugly' when written down?
And what would I have done had 'pro ratad' been used as a verb in a direct quote?
NB I see in my Oxford English Dictionary that there is a verb 'prorate': "allocate or assess pro rata". However this isn't in common use this side of the Atlantic, as the OED recognises, so isn't much of an option. But it would be a very useful verb to have...