1. (v. i.) To become greater or more in size, quantity, number, degree, value, intensity, power, authority, reputation, wealth; to grow; to augment; to advance; -- opposed to decrease.

2. (v. i.) To multiply by the production of young; to be fertile, fruitful, or prolific.

3. (v. i.) To become more nearly full; to show more of the surface; to wax; as, the moon increases.

4. (v. t.) To augment or make greater in bulk, quantity, extent, value, or amount, etc.; to add to; to extend; to lengthen; to enhance; to aggravate; as, to increase one's possessions, influence.

5. (v. i.) Addition or enlargement in size, extent, quantity, number, intensity, value, substance, etc.; augmentation; growth.

6. (v. i.) That which is added to the original stock by augmentation or growth; produce; profit; interest.

7. (v. i.) Progeny; issue; offspring.

8. (v. i.) Generation.

9. (n.) The period of increasing light, or luminous phase; the waxing; -- said of the moon.

accession accessory accompaniment accretion accrue accumulate add to addenda addendum additament addition additive additory additum adjunct adjunction adjuvant advance affixation agent provocateur agglutination aggrandize aggrandizement aggravate aggravation ampliation amplification amplify anabasis annex annexation annoy annoyance appanage appendage appendant apportion appreciate appurtenance appurtenant ascension ascent attachment augment augmentation balloon beef up better bloat blossom blow up boom boost breakthrough breed brew broaden broadening build build up bulk bulk out burgeon calibrate calibrated clamber climb climbing coda complement compound concomitant contentiousness continuation corollary count crescendo decrease deepen deepening deliberate aggravation deployment deteriorate deterioration develop developing development differentiate dilate dispersion distend divide elevation elongate embitter embittering embitterment enhance enhancement enlarge enlargement escalade escalating escalation exacerbate exacerbation exalt exasperate exasperation expand expanding expansion extend extension extrapolation fanning out fatten fill out fix fixture flare flourish fortify fountain further gain gain strength gains gather germinate get ahead go up gradational grade gradual graduate graduated greaten grow grow up growing growth gush gyring up heat up heighten heightening hierarchic hike hike up hiking hot up huff hypertrophy improve increasing increment inflate inflation inmate intensification intensify irritate irritation jack up jet joining jump jump up junction juxtaposition leap lengthen levitation magnification magnify make acute make worse manifold mature maximize measure mount mounting multiple multiplication multiplication table multiplier multiply multiplying mushroom number offshoot on the increase outgrow overdevelop overgrow overtop parcel parlay pendant plus prefixation procreate profits progressive proliferate proliferating proliferation prolong protract provocation provoke puff puff up pullulate pump pump up push put up pyramid quantify quantize raise raising rarefy rate recruit reduce regular reinforce reinforcement reproduce rise rising rocketing up run up saltation scalar shade off sharpen sharpening shoot up shooting up side effect side issue snowball soaring sour souring splay spout spread spreading