This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

ad. Toward one side: took a step sideways; a sideways glance.

ad. From one side: a painting lit sideways; sideways pressure.

ad. With the side forward: turned sideways to show the profile; a sideways view.

adj. Moving or directed toward one side.

adj. Positioned sideways (with a side to the front).

adj. Neither moving upward nor moving downward.

adj. In conflict (with); not compatible (with).

ad. With a side to the front.

ad. Towards one side.

ad. Askance; sidelong.

ad. Neither upward nor downward.

ad. Toward the side; sidewise.

Same as sidewise.

ad. to, toward or at one side

ad. toward one side

ad. from the side; obliquely

adj. (of movement) at an angle

ad. with one side forward or to the front

"This is what I described as the sideways S pattern."

oblique   

lengthwise   

broadside    crosswise    obliquely   

sidewise    sidelong    laterally    sideward    sidewards    sideway    collaterally   

sidelong    backward    sidewise    side-to-side    dismissive    convulsive    wry    jerky    imperceptible    conspiratorial