Trow

...Sure (he said) my wife shall never know Of this escape, and if she do, I know the worst I trow She can but chide, shall feare of chiding make me to forslow?

Source: wiktionary

Finding me stick to her still like wax, for my mettle was up as hers was, away she flew with me swifter than ever I went before, or since, I trow.

Source: wiktionary

"And as their valour, so you trow, defied on aspe'rous voyage cruel harm and sore, so many changing skies their manhood tried, such climes where storm-winds blow and billows roar[.]"

Source: wiktionary

But was the matter allowed to end there? I trow not.

Source: wiktionary