attack

*an attack

(of an illness) a bout of some sickness; an instance or acute case of some disease. (*Typically: have ~; produce ~; suffer ~.) Mr. Hodder had an attack of stomach upset that forced him to stay at home.

*in force 

1. [of a rule or law] currently valid or in effect. (*Typically: be ~.) Is this rule in force now? The constitution is still in force.

2. Fig. in a very large group. (*Typically: arrive ~; attack ~.) The entire group arrived in force. The mosquitoes will attack in force this evening.

See also: force

suffer an attack (of an illness)

1. Go to an attack (of an illness).

See also: suffer

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in force

in effect and in use The law has been in force for two years.

Usage notes: used when referring to laws, rules, agreements, and systems

See also: force

on the attack

forcefully criticizing or energetically competing against someone Flynn went on the attack against his rivals, finally bringing some life into a very dull campaign.

Etymology: based on the literal meaning of on the attack (using force against an enemy)

under attack

being acted against physically or with words She said cuts in spending put education in America under attack.

Related vocabulary: under fire

Etymology: based on the literal meaning of under attack (having physical force used against you)