1. (n.) Mode or state of being; state or situation with regard to external circumstances or influences, or to physical or mental integrity, health, strength, etc.; predicament; rank; position, estate.

2. (n.) Essential quality; property; attribute.

3. (n.) Temperament; disposition; character.

4. (n.) That which must exist as the occasion or concomitant of something else; that which is requisite in order that something else should take effect; an essential qualification; stipulation; terms specified.

5. (n.) A clause in a contract, or agreement, which has for its object to suspend, to defeat, or in some way to modify, the principal obligation; or, in case of a will, to suspend, revoke, or modify a devise or bequest. It is also the case of a future uncertain event, which may or may not happen, and on the occurrence or non-occurrence of which, the accomplishment, rescission, or modification of an obligation or testamentary disposition is made to depend.

6. (v. i.) To make terms; to stipulate.

7. (v. i.) To impose upon an object those relations or conditions without which knowledge and thought are alleged to be impossible.

8. (n.) To invest with, or limit by, conditions; to burden or qualify by a condition; to impose or be imposed as the condition of.

9. (n.) To contract; to stipulate; to agree.

10. (n.) To put under conditions; to require to pass a new examination or to make up a specified study, as a condition of remaining in one's class or in college; as, to condition a student who has failed in some branch of study.

11. (n.) To test or assay, as silk (to ascertain the proportion of moisture it contains).

12. (n.) train; acclimate.

abate ability abnormality acclimate acclimatize accommodate accustom acute disease adapt adjust adjust to affairs affection affliction ailment allergic disease allergy alter apprentice assuage atrophy attach a condition attune bacterial disease bearings beat into birth defect blight bound boundary condition box in brainwash break break in breed bring up capability capacitate capacity cardiovascular disease case case harden caste catch catechize character chronic disease circulatory disease circumscribe circumstance circumstances class clause cobble commission competence competency complaint complication concerns condition of things conditions confine confirm congenital defect conjuncture contain contingency copyright cultivate darn dealings defect deficiency disease deformity degenerative disease demand develop diminish disability discipline disease disorder distemper do up doctor doings domesticate domesticize donnee draw the line drill echelon educate enable endemic endemic disease endocrine disease environment epidemic disease equip escalator clause escape clause escape hatch establish estate event eventuality exception exemption exercise familiarize fetch up fettle fine print fit fit out fit up fitness fittedness fix fix up footing form foster functional disease fungus disease furnish gastrointestinal disease genetic disease gentle get ready given goings-on groom grounds habituate handicap harden have a catch have a joker health hedge hedge about hereditary disease hierarchy house-train housebreak iatrogenic disease ill illness imbue implant impregnate impress improve incident inculcate indisposition indoctrinate infectious disease infirmity infix influence infuse inoculate insist upon instill inure jam joker juncture kicker kilter leaven life limit limitation limiting condition location lot make conditional make contingent make ready malady malaise march of events mastery matters maturity mend mitigate modality mode moderate modification modify modulate morbidity morbus mould muscular disease must narrow naturalize necessity neurological disease nurse nurture nutritional disease obligation occasion occupational disease occurrence order organic disease orient orientate outfit overhaul palliate pandemic disease parameter part pass patch patch up patent pathological condition pathology persuade pickle place plant disease plight position posture power structure practice precedence predicament prepare preparedness prerequisite proceedings proficiency program protozoan disease provision provisions proviso psychosomatic disease put in commission put in order