squarely

From square +‎ -ly. First use appears c. 1557 in the writings of Robert Recorde.

squarely (comparative more squarely, superlative most squarely)

(geometry) In the shape of a square; at right angles.
(also figurative) Firmly and solidly.
- 2021 August 16, Michael D. Shear, David E. Sanger, quoting Joe Biden, “Biden stands behind Afghan withdrawal, despite ‘hard and messy’ final days.”, in The New York Times‎, →ISSN, archived from the original on 21 August 2021:
  “I stand squarely behind my decision,” he said, adding that he would not “shrink from my share of responsibility for where we are today.”
- 2020 October 19, Matt Egan, “The oil industry is in crisis. ConocoPhillips is doubling down”, in CNN Business‎:
  Conoco on Monday announced a $9.7 billion all-stock takeover of Concho Resources (CXO), a fracker squarely focused on the Permian Basin, the massive West Texas oilfield at the heart of the shale revolution.
(figurative) In a direct, straightforward and honest manner.
- 2021 August 16, Michael D. Shear, David E. Sanger, “Biden stands behind Afghan withdrawal, despite ‘hard and messy’ final days.”, in The New York Times‎, →ISSN, archived from the original on 21 August 2021:
  But Republicans placed the blame squarely on Mr. Biden.

In the shape of a square; at right angles

Firmly and solidly

Bulgarian: твърдо (bg) (tvǎrdo), категорично (bg) (kategorično)
French: solidement (fr), fermement (fr), carrément (fr)
German: fest (de), felsenfest (de)
Hungarian: határozottan (hu)
Occitan: solidament (oc), fèrmament
Portuguese: firmemente (pt), solidamente
Russian: твёрдо (ru) (tvjórdo), определённо (ru) (opredeljónno), непосре́дственно (ru) (neposrédstvenno)
Spanish: sólidamente (es), cuadradamente (obsolete)

In a direct, straightforward and honest manner

English