1580s, "pierce through, impale," from French transfixer (15c.), from Latin transfixus "impaled," past participle of transfigere "to impale, pierce through," from trans "across, beyond; through" (see trans-) + figere "to fix, fasten" (from PIE root *dheigw- "to stick, fix"). Figurative sense of "make motionless or helpless, as with amazement, terror, or grief" is first recorded 1640s. Related: Transfixed; transfixing.