What are the best answers for “position at right angles to the horizon”?

erectness, verticality, verticalness.

How many letters does the top answer for “position at right angles to the horizon” have?

The most common answer is erectness (9 letters).

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

erectness 9 letters wn-def

position at right angles to the horizon

verticality 11 letters wn-def

position at right angles to the horizon

verticalness 12 letters wn-def

position at right angles to the horizon