unfrequently

Moreover, the action necessary in conveying the tempting graces to their destination has not unfrequently been found useful.

Small plants are more liable to be injured than large ones, and not unfrequently nearly every leaf is covered with the spots.

I have not unfrequently, indeed, been surprized at the unaccountable ignorance betrayed by this class of men.

The hedges are shaped into peacocks, and not unfrequently into ladies and gentlemen dancing a minuet.

With these he learned to drink to excess, and was not unfrequently under the influence of strong drink.