How many letters does the top answer for “to, toward or at one side” have?

The most common answer is sidelong (8 letters).

Crossword clue: to, toward or at one side

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

sidelong 8 letters wn-def

(used especially of glances) directed to one side with or as if with doubt or suspicion or envy

sideways 8 letters wn-def

(of movement) at an angle

on or to one side 67% similar → aside

turned or twisted toward one side 60% similar → askew, cockeyed, lopsided

by the side; sidewise; toward, or from, the side. 50% similar → laterally

one who takes a side. 50% similar → sider

the side toward the wind 50% similar → weatherboard

toward a full side 50% similar → broadside