- weak
- /wi:k/ adjective
1 PHYSICALLY not physically strong: The illness had left her feeling tired and weak.(+ with): Nina was weak with hunger. | weak heart/bladder/eyes etc (=that do not work properly)2 CHARACTER easily influenced by other people because you cannot make decisions by yourself: a weak and indecisive man3 NOT GOOD AT not having much ability or skill in a particular activity or subject: a weak backhand(+ at/in): Julie's always been weak in science.4 LEADERS/COUNTRIES/ORGANIZATIONS ETC not having much power or influence: weak trade unions | a weak leader5 ARGUMENT/EXPLANATION/STORY ETC not having the power to persuade or interest people: The play was well-acted but the plot was weak.6 INDUSTRY/COMPANY ETC not successful financially: a weak economy | The pound was weak against the dollar.7 BUILDINGS/OBJECTS unable to support a lot of weight: a weak bridge.8 DRINK/LIQUID containing a lot of water or having little taste: weak tea9 LIGHT/SOUND difficult to see or hear: a weak radio signal10 weak point/spot a part of something or of someone's character that can easily be attacked or criticized(+ in): Agassi soon found the weak spots in Stich's game.11 weak at the knees not feeling well or strong, especially because you have had a sudden surprise or because you have seen someone you love: His quick smile sent her weak at the knees.12 weak smile a slight smile, especially because you are not very happy13 a weak moment a time when you can be persuaded more easily than usual: David caught me at a weak moment and I lent him -10.14 weak in the head informal stupid or silly15 weak chin/jaw a weak chin or jaw is not very well developed and people often think it suggests a weak character16 weak verb technical a verb that forms the past tense and past participle in a regular way17 weak consonant/syllable a weak consonant or syllable is not emphasized—see also: weaker sex — weakly adverb: "I'm sorry," she said, smiling weakly. | He sank down weakly on the sofa.
Longman dictionary of contemporary English. 2004.