Strengthening

a.

1.

That strengthens; giving or increasing strength. Strengthening plaster (Med.) a plaster containing iron, and supposed to have tonic effects.

Noun	1.	strengthening - becoming stronger Antonyms: weakening - becoming weaker
	2.	strengthening - the act of increasing the strength of something Antonyms: weakening - the act of reducing the strength of something
Adj.	1.	strengthening - invigorating physically or mentally Synonyms: fortifying

accelerando, acceleration, affirmation, aggravation, analeptic, attestation, authentication, backing, backing up, bearing out, beefing-up, blowing up, blowup, bolstering, bracing, buttressing, case hardening, certification, circumstantiation, concentration, condensation, confirmation, consolidation, corroborant, corroboration, corroboratory evidence, deepening, documentation, enhancement, exacerbation, exaggeration, explosion, fortification, hardening, heating-up, heightening, information explosion, intensification, invigorating, invigoration, magnification, pickup, population explosion, proof, proving, proving out, ratification, redoubling, refreshing, refreshment, reinforcement, reinvigoration, restorative, restrengthening, revivification, reviving, roborant, speedup, step-up, stimulating, substantiation, support, supporting evidence, tempering, tightening, tonic, undergirding, validation, verification