1. Against.

2. As a prefix, signifying side, secondary, private.

3. Near; with; through, as author, maker, cause, means; according to; in the measure or quantity of; during; not later than.

4. Near: aside; away. By and-by, in a short time after; presently. By-the-by, by the way, as a passing remark aside from the main subject. By one's self, alone. To stand by, to stand near, or to support.

5. Near.

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

• bisy,
• bby,
• ty,
• bv,
• ly,
• eby,
• bf,
• avy,
• uy,
• ey,
• bys,
• xyz,
• hy,
• py,
• ry,
• biy,
• bya,
• bu,
• bj,
• bezy

• br,
• bay,
• byway,
• bi-,
• B,
• n.y.,
• be,
• b.s.,
• bu.,
• -ty,
• bye,
• ba,
• Ay,
• -ey,
• boy,
• b.c.,
• buy,
• b.a.,
• be-,
• ky.,
• y,
• -y,
• wy,
• b's,
• -ly,
• ny,
• ky,
• My.

The word "by" does not have a distinct plural form. It remains the same in both singular and plural contexts.

The singular form of the word "by" is "b"