Meaning of keep sth up In English

• 0 to make something continue at its present level and not allow it to fall:

  • You must eat to keep your strength up.

• 1 to continue without stopping or changing, or to continue something without allowing it to stop or change:

  • Keep up the good work!

• 2 to not allow something that is at a high level to fall to a lower level:

  • We need to keep up the enthusiasm that we generated with the first advertising campaign.

• 3 to continue to do or pay something:

  • The employees kept up their demands for better working conditions.

  • When he lost his job, he wasn't able to keep up his loan repayments.