unacceptably

adv

unacceptably

adv

Etymology From unacceptable + -ly.

1

Not within the limits of what is generally considered to be acceptable.

The levels of lead in marine hull paints are still unacceptably high.
Your comments are unacceptably provocative.

1 more example

Network Rail has started an 18-month recovery plan from "unacceptably poor" performance on its Western route between London Paddington and Reading.2024 March 6, Paul Clifton, “Network News: NR launches Reading-Paddington recovery operation”, in RAIL, number 1004, page 6:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.