1) Acerb 2) Acidy 3) Citric 4) Lemonlike 5) Sour 6) Sourish 7) Tangy 8) Tart 1) Author Snicket 2) Having a fruity tart flavor 3) Kid-lit author Snicket 4) Kidlit character snicket 5) Lemonlike 6) Like a certain fruit 7) Like a certain Life Saver 8) Like a certain Starburst 9) Like a citrus scent 10) Like Asian grass soup 11) Like fragrant furniture oils 12) Like many furniture sprays 
Lemony is Australian slang for angry or irritable.
[adj] - tasting sour like a lemon
lemonlike adjective tasting sour like a lemon