(obsolete) by the by; incidentally

Physically above and in contact with. / Physically directly supported by. / Being followed by another so as to form a series. / At (a prescribed point in time). / On.

present participle of reckon upon

simple past tense and past participle of reckon upon

to experience; to suffer. / to occur at some particular point in time. / to set upon; to attack suddenly

To grasp or take hold of (an object) suddenly, forcibly, or tightly.

To influence, have an effect upon. / To be relevant to.

Third-person singular simple present indicative form of reckon upon

To attack someone. / To begin an activity; to embark upon a course of action.

Third-person singular simple present indicative form of bear upon