1. Helpful and Harmful

beneficial

producing good effects; helping to achieve a good result.

advantageous

providing a benefit; favourable

constructive

helpful and improving; tending to build up or improve

conductive

making something possible or easy to do

practical

making something possible or easy to do

pragmatic

realistic; concerned with real applications, consequences, etc.

reinforce

to strengthen or support something

bolster

to support or hold up

buttress

to support or hold up

undergrid

to support from below; to provide an underlying foundation

utilize

to make practical use of

employ

to apply or make use of a skill or resource

exploit

to use something or someone, esp. to gain a profit or selfishly achieve a goal

leverage

to use something or someone, esp. to gain a profit or selfishly achieve a goal

expedite

to speed something up; to do something quickly

facilitate

to assist; to aid the progress of something or someone

accommodate

to assist; to aid the progress of something or someone

apt

appropriate; relevant

relevant

important or meaningful to the current topic, subject, or situation

pertinent

important or meaningful to the current topic, subject, or situation

efficacious

producing the desired outcome or result

means

a method or tools for used to achieve a result or object

medium

a method or tools for doing something

mechanism

a system or process designed for a particular goal

benign

gentle and kind; not harmful

innocuous

not likely to cause harm or offense

boon

something which provides a benefit or advantage

bane

something that causes a great nuisance

nuisance

something that causes annoyance

forestall

to prevent something from happening by acting before it can occur

preclude

to make (something) impossible : to prevent (something) from happening

impede

to slow or delay the progress of something

inhibit

to restrain or hold back; to prevent someone or something from doing something

hamper

to slow the movement or progress of someone or something

hinder

to slow or obstruct the progress of someone or something

thwart

to successfully stop someone or something; to prevent something from happening

encumber

to weigh down or hinder something or someone

undermine

to gradually damage or weaken something or someone

compromise

to endanger or weaken

crude

unfinished; rough (as in rough draft)

makeshift

serving as a temporary substitute

rudimentary

basic or simple in form

exacerbate

to make more severe

aggravate

to cause annoyance

endanger

to put (someone) to be in danger

jeopardize

to put someone or something in danger or at risk

adverse

unfavorable or harmful; preventing or opposing success

detrimental

tending to cause harm; to have a negative effect

insidious

subtle and dangerous; gradual and harmful

pernicious

extremely harmful or wicked