(idiomatic) In one's opinion, from one's point of view.

(Ulster) An unpredictable person.

plural of add on

(calculus) a covector field

(slang, basketball) A basketball player who plays college basketball for a single year and then declares for the NBA draft.

(obsolete, nonce word) secret

plural of strap on

plural of follow-on

(idiomatic, Northern England) Alone, on one's own.

plural of walk-on