Second-person singular simple present form of let.(verb)
Second-person simple past singular of let(verb)
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Use "lettest" in a sentence
"Atli said, “Ill it beseemed to thee to do this, though somewhat of wrong was between us; for thou wert wedded to me by the rede of thy kin, and dower paid I for thee; yea, thirty goodly knights, and seemly maidens, and many men besides; and yet wert thou not content, but if thou should rule over the lands King Budli owned: and thy mother-inlaw full oft thou lettest sit a-weeping.”"
"Thou mayst laugh till thou lettest the letter fall, if thou wilt, but it reminded me of the magician Atlantes on his hippogriff with a knight trussed up behind him, in the manner Ariosto has depicted that matter."
"Thou lettest slip our delight, whilst thou passest the whole night in the prayer-niche."