Synonym: attentive, lively, nimble, on the job, prompt, ready, watchful, dull, slow, torpid. Similar words: dealer, ruler, clerk, killer, gallery, clergy, hitler, bowler. Meaning: [ə'lɜːt] 
n. 1. condition of heightened watchfulness or preparation for action 2. a warning serves to make you more alert to danger 3. an automatic signal (usually a sound) warning of danger. v. warn or arouse to a sense of danger or call to a state of preparedness. adj. 1. very attentive or observant 2. mentally responsive 3. not unconscious; especially having become conscious 4. (usually followed by `to') showing acute awareness; mentally perceptive.
n. 1. condition of heightened watchfulness or preparation for action 2. a warning serves to make you more alert to danger 3. an automatic signal (usually a sound) warning of danger. v. warn or arouse to a sense of danger or call to a state of preparedness. adj. 1. very attentive or observant 2. mentally responsive 3. not unconscious; especially having become conscious 4. (usually followed by `to') showing acute awareness; mentally perceptive. 
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121. Regular exercise could help you - and your child - to feel better, look better and be more alert.
122. The perceptive consultant should also be alert to the way power is distributed in the organization.
123. Police were put on alert in case larger groups of demonstrators joined in.
124. Sander has emphasized that the quiet alert state in a young infant is extremely stable.
125. Early in the war Soviet southern troops were put on high alert.
126. But the alert was called off when it was identified as a dummy empty shell.
127. The subject remains conscious and alert, but can not control his muscles.
128. In addition, the automated check-in facility will alert readers to current issues of periodicals as soon as they are processed.
129. If you checked ten or more, this is a May Day alert.
130. Infants remain in this quiet alert state for an average of forty-three minutes during the first hour after birth.
131. Be sure to alert the local planning authority, which may not be aware of the subtleties of the legislation.
132. All these signs, of course, are only indicators that should alert reasonable educators to the possibility of abuse or neglect.
133. Hunt alert: Huntsmen in Northern Ireland have been alerted by police after letter bombs were sent to two hunt members.
134. Some authors have suggested that the clicks are made to alert other cats to the presence of the prey.
135. Voice over Elsewhere investigations are continuing into a separate security alert in Gloucester City Centre yesterday.
136. Be alert to the possibility of change to cross-talk between four people, which is much more difficult for the speechreader.
137. The therapist should be alert to the possibilities of a patient losing all hope.
138. A couple of years ago May wrote a manifesto to alert the world to the advent of widespread encryption.
139. Personally, I don't have much faith in them, especially those designed to alert the neighbourhood.
140. Three major rivers have already flooded, and two more are on red alert.
141. Even though it was just a small black cube, it somehow always looked more alert when it was listening.
142. His arrest followed a major security alert before a visit by the Prime Minister.
143. Edward tried to be alert to their onset, but Emilio hid a great deal.
144. Being aware of this, you will be alert and attentive to meaning.
145. Echoes of the signal alert them to possible prey,(www.Sentencedict.com) at ranges up to 80-90 metres in shallow waters.
146. Again, the viewfinder image will alert you to the problem by showing you how the camcorder is seeing the scene.
147. But security chiefs in the province intend to keep their men on full alert.
148. They were to stay on the alert for any soldier unlucky enough to go overboard.
149. Because of the potential seriousness of the incident, a site alert was announced.
150. High-sounding jargon or pointless platitudes cut little ice when one is alert to the actual message being conveyed.