(obsolete) Of concern; affecting, important. / Arousing or holding the attention or interest of someone. / (euphemistic) Pregnant.

present participle of interest

(uncountable, finance) The price paid for obtaining, or price received for providing, money or goods in a credit transaction, calculated as a fraction of the amount or value of what was borrowed.

To engage the attention of; to awaken interest in; to excite emotion or passion in, in behalf of a person or thing.

Having or showing interest. / (now rare) Motivated by considerations of self-interest; self-serving. / Owning a share of a company.

simple past tense and past participle of interest

plural of interest

The persons interested in any particular business or cause, taken collectively.

Third-person singular simple present indicative form of interest

(organic chemistry) Describing reactions between esters.