Wiktionary
vb. (en-archaic second-person singular of breathe English)
Usage examples of "breathest".
Thou, haughty priest, thou thyself art the accursed, if, puppet and tool of low cabals and exiled tyrants, thou breathest but a breath in the name of the Lord of Justice, for the cause of the oppressor, and against the rights of the oppressed.
Seest thou not thou art in the presence of clay which the Plague hath touched - thou breathest the air which destroys!
And, meekly resting there upon the sod, Thou breathest upward holy mysteries, In simple tones that steal upon the sense, Like Childhood's prattling truth and innocence.
Thou swallowest the winds, thou drawest into thyself the north wind, thou eatest up the flesh of thy seat on the day when thou breathest truth.
To whom is it owing that thou yet breathest this air, beholdest that sky, and canst amuse thy lark's spirit with extravagances and follies?