weak

1. (adjective) Lacking in force (usually strength) or ability. 2. (adjective) Unable to sustain a great weight, pressure, or strain. 3. (adjective) Unable to withstand temptation, urgency, persuasion, etc.; easily impressed, moved, or overcome; accessible; vulnerable. 4. (adjective) Dilute, lacking in taste or potency. 5. (adjective) (grammar) Displaying a particular kind of inflection, including: 6. (adjective) That does not ionize completely into anions and cations in a solution. 7. (adjective) One of the four fundamental forces associated with nuclear decay. 8. (adjective) Bad or uncool. 9. (adjective) Having a narrow range of logical consequences; narrowly applicable. (Often contrasted with a strong statement which implies it.) 10. (adjective) Resulting from, or indicating, lack of judgment, discernment, or firmness; unwise; hence, foolish. 11. (adjective) Not having power to convince; not supported by force of reason or truth; unsustained. 12. (adjective) Lacking in vigour or expression. 13. (adjective) Not prevalent or effective, or not felt to be prevalent; not potent; feeble. 14. (adjective) Tending towards lower prices. 15. (adjective) Lacking contrast.