Infinitive: to keep up sth
Participle: kept up sth
Gerund: keeping up sth
| I | keep up sth |
| you | keep up sth |
| he;she;it | keeps up sth |
| we | keep up sth |
| you | keep up sth |
| they | keep up sth |
| I | have kept up sth |
| you | have kept up sth |
| he;she;it | has kept up sth |
| we | have kept up sth |
| you | have kept up sth |
| they | have kept up sth |
| I | kept up sth |
| you | kept up sth |
| he;she;it | kept up sth |
| we | kept up sth |
| you | kept up sth |
| they | kept up sth |
| I | had kept up sth |
| you | had kept up sth |
| he;she;it | had kept up sth |
| we | had kept up sth |
| you | had kept up sth |
| they | had kept up sth |
| I | will keep up sth |
| you | will keep up sth |
| he;she;it | will keep up sth |
| we | will keep up sth |
| you | will keep up sth |
| they | will keep up sth |
| I | will have kept up sth |
| you | will have kept up sth |
| he;she;it | will have kept up sth |
| we | will have kept up sth |
| you | will have kept up sth |
| they | will have kept up sth |
| I | keep up sth |
| you | keep up sth |
| he;she;it | keep up sth |
| we | keep up sth |
| you | keep up sth |
| they | keep up sth |
| I | have kept up sth |
| you | have kept up sth |
| he;she;it | have kept up sth |
| we | have kept up sth |
| you | have kept up sth |
| they | have kept up sth |
| I | kept up sth |
| you | kept up sth |
| he;she;it | kept up sth |
| we | kept up sth |
| you | kept up sth |
| they | kept up sth |
| I | had kept up sth |
| you | had kept up sth |
| he;she;it | had kept up sth |
| we | had kept up sth |
| you | had kept up sth |
| they | had kept up sth |
| I | would keep up sth |
| you | would keep up sth |
| he;she;it | would keep up sth |
| we | would keep up sth |
| you | would keep up sth |
| they | would keep up sth |
| I | would have kept up sth |
| you | would have kept up sth |
| he;she;it | would have kept up sth |
| we | would have kept up sth |
| you | would have kept up sth |
| they | would have kept up sth |
| you | keep up sth |
| we | Let's keep up sth |
| you | keep up sth |
| I | am keeping up sth |
| you | are keeping up sth |
| he;she;it | is keeping up sth |
| we | are keeping up sth |
| you | are keeping up sth |
| they | are keeping up sth |
| I | have been keeping up sth |
| you | have been keeping up sth |
| he;she;it | has been keeping up sth |
| we | have been keeping up sth |
| you | have been keeping up sth |
| they | have been keeping up sth |
| I | was keeping up sth |
| you | were keeping up sth |
| he;she;it | was keeping up sth |
| we | were keeping up sth |
| you | were keeping up sth |
| they | were keeping up sth |
| I | had been keeping up sth |
| you | had been keeping up sth |
| he;she;it | had been keeping up sth |
| we | had been keeping up sth |
| you | had been keeping up sth |
| they | had been keeping up sth |
| I | will be keeping up sth |
| you | will be keeping up sth |
| he;she;it | will be keeping up sth |
| we | will be keeping up sth |
| you | will be keeping up sth |
| they | will be keeping up sth |
| I | will have been keeping up sth |
| you | will have been keeping up sth |
| he;she;it | will have been keeping up sth |
| we | will have been keeping up sth |
| you | will have been keeping up sth |
| they | will have been keeping up sth |
| I | would be keeping up sth |
| you | would be keeping up sth |
| he;she;it | would be keeping up sth |
| we | would be keeping up sth |
| you | would be keeping up sth |
| they | would be keeping up sth |
| I | would have been keeping up sth |
| you | would have been keeping up sth |
| he;she;it | would have been keeping up sth |
| we | would have been keeping up sth |
| you | would have been keeping up sth |
| they | would have been keeping up sth |
"The word prob. belongs primarily to the vulgar and non-literary stratum of the language; but it comes up suddenly into literary use c.1000, and that in many senses, indicating considerable previous development." [OED]Meaning "financially support and privately control" (usually in ref. to mistresses) is from 1560. The noun meaning "innermost stronghold of a tower" is from 1586, perhaps a translation of It. tenazza, with a notion of "that which keeps" (someone or something); the sense of "food required to keep a person or animal" is attested from 1801. Keepsake is first recorded 1790, on model of namesake; thus an object kept for the sake of the giver. For keeps "completely, for good" is Amer.Eng. colloquial, from 1861. Keeper "one who has charge of some person or thing, warden" is from c.1300; sense of "one who carries on some business" is from c.1440.