1. In a sparse manner.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• parsaly,
• parsely,
• sparkaly,
• sparkely,
• sparkelly,
• sparsly,
• scarsely,
• paisely,
• separtely,
• sparcly,
• sparsley,
• sparcely,
• spasrely,
• spasely,
• spairly,
• sparselly,
• padseoy,
• sparbel,
• starsel,
• Sparsety

• sparse,
• spruce,
• spraker,
• Spiers,
• sparkle,
• sparsity,
• spurge,
• sparseness,
• Spears,
• sparge,
• speirs,
• sparker,
• sprucely,
• SPRAGUE,
• Spraggs,
• SPIRES,
• sprouse,
• sparks,
• sprecher,
• spriggs,
• sparkly,
• Spurgeon,
• sprightly,
• Sparkes,
• Speers.

The adjective form of the word "sparsely" is "sparse".

The plural form of the word "sparsely" is still "sparsely." The word itself is an adverb and does not typically have a plural form.

The singular form of the word "sparsely" is "sparse"