beside oneself (with joy or grief), out of one's mind

intoxicated by love

the state of being beside one's self in love

voluntarily, by self, of self

by oneself, in senses

recover one's senses, be oneself again

by God, to swear by God

(swear word) by God!

in person, of itself, personally

presumptuously, with the conceit of self

an allusion to someone who is exceeding his limits

in one's own writing, signed in person

be dumb founded, be petrified

proud, self-conceited, vain, arrogant

voluntarily, of one's own accord, on one's own account, in his (or her) own way, of himself (or herself)

of oneself, of himself (themselves), of one's own accord, voluntarily, freely, of itself, spontaneously, naturally

automatically, spontaneously, of oneself, of one's own accord, of or by itself

struck, dumb, aghast, confounded silent