In oncology, quickly growing, tending to spread rapidly. As, for example, an aggressive tumor.

In medicine, describes a tumor or disease that forms, grows, or spreads quickly. It may also describe treatment that is more severe or intense than usual.

Aggressive investor refers to someone who takes on more risk than the average investor in hopes of getting higher-than-average returns.

Unpleasantly harsh in taste or texture, usually due to a high level of tannin or acid.

1791, from Latin aggress-, past participle stem of aggredi "to approach, attack" (see aggression) + -ive. In psychological use from 1913, first in translations of Freud. Related: Aggressivel [..]

forceful or offensive.

An aggressive wine is usually too high in acidity. The term can also be used to describe wines with hard tannins.

 Referring to a plant’s active growth behavior.

having or showing determination and energetic pursuit of your ends; "an aggressive businessman"; "an aggressive basketball player"; "he [..]

An interpersonal style where only the immediate needs of the self are considered rather than the needs of others. (As opposed to passive or assertive)

a state that is likely to attack others or be hostile.

(adj) having or showing determination and energetic pursuit of your ends(adj) tending to spread quickly(adj) characteristic of an enemy or one eager to fight

A quickly growing cancer.

Definition: Rapidly growing when said of a tumor; an active intervention when said of a treatment such as surgery.

Forward and bright sonic character.

A quickly growing cancer. (NCI)

A word for a fast-growing cancer.

1. Denoting aggression. 2. Denoting a competitive forcefulness or invasiveness, as of a behavioural pattern, a pathogenic organism, or a disease process. (05 Mar 2000)

(adj.) A term used to describe the behavior of a monster which will attack upon sensing a player character who enters its area of detection. This behavior is noted on the wiki pages of monsters which [..]

Tending or disposed to aggress; characterized by aggression; making assaults; unjustly attacking. ''an aggressive policy, war, person, nation'' (programming) Of code optimization techniques: exp [..]

A term used to describe a female-bodied and identified person who prefers presenting as masculine. This term is most commonly used in urban communities of color.

 lymphoma that is growing rapidly