penetrative

adj

1. That can or does physically penetrate something; piercing, penetrating.

   “Would'ſt thou be window'd in great Rome, and ſee / Thy Maſter thus with pleacht Armes, bending downe / His corrigible necke, his face ſubdu'de / To penetratiue ſhame […]”

   “[T]he penetrative Sun, / His Force deep-darting to the dark Retreat / Of Vegetation, sets the steaming Power / At large […].”

2. Displaying insight or discrimination; acute; penetrating.
3. That can penetrate opposition defences.
4. Pertaining to sexual activity involving penetration by the penis (or similar object).

   “I've been in a relationship for nearly a year and we have an amazing sex life as is, but we've never managed penetrative sex.”