Second-person singular present simple form of offer(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "offerest" in a sentence
"I will harden my heart against death and seek thy city, with grateful thanks for all thou offerest me."
"Rejoined the shepherd, All thou sayest I deny and abhor, and all thou offerest I reject: for thou art cunning and perfidious and there is no honesty in thee nor is there honour."
"But thou art not my friend, if thou offerest to plead for either of the saucy creatures, after thou hast read it."