(emphatic) no

Cleverness and education can be gained only by effort.

(Singapore, colloquial) Exceptionally good

plural of no-planer

A conspiracy theorist who believes that no airplanes were involved in the events of 9/11.

(set phrase) To be very well-known; to be familiar to almost everyone.

Third-person singular simple present indicative form of need no introduction

present participle of need no introduction

simple past tense and past participle of need no introduction

Swapping two things or subjects of equal value is considered an honest deal.