Halloween -|- 2 L's, 2 E's and an O in the middle. Hall + O +Ween 

handkerchief -|- hand + ker + chief 

haphazard -|- Hal And Phil Had A Zany Afternoon Riding Dirt-bikes.   

happiness -|- Although the root word is ‘happy' when you add the –ness, you drop the –y and add an –i.  

heard -|- you heard it with your ear.  

height -|- h + eight (8) 

herd -|- Herds of Elephants Run Daily.  

hoarse -|- Hoarse needs an ‘oar' as much as a row boat. 

hygiene -|- Help Your Granny In Ever Need Expressed.  

hypocrite -|- Split this one up and make the I's long to help your remember: hypo - crite 

hoping -|- When hope becomes hoping, drop the –e and add an –ing.  

hole -|- A hole is what you dig. Don't add a –w, unless you mean all of something. The city puts fences around the whole hole in the park.  

hungrily -|- To make ‘hungry' an adverb, drop the –y and add an –ily. 

handkerchief -|- The -d is silent,

but still there; this word is simple enough: hand + kerchief 

harass -|- The spelling of this word shouldn't harass you, 2 A's, 2 S's, but only one -r. 

hear -|- You hear with your ear. 

height -|- This word reaches new heights, just remember h + 8s.  

hierarchy -|- hier + arch + y -- the -i before -e rule applies here. 

humorous -|- Humor us and add another -o to this word. 

hypocrisy -|- Hippos are full of hypothetical hypocrisy. 

heroes -|- Hulk Eats Rice On Every Saturday