helpful and harmful

Beneficial

Producing good effect; helping to achieve a good result

Advantageous

Providing a benefit ; favorable

Constructive

Helpful & improving; tending to buildup or improve

Conductive

Making something possible or easy to do

Practical

Concerned with what is real rather than imagined or theoretical

Pragmatic

Realistic

Reinforce

To strengthen or support

Bolster

to support or hold up

Buttress

To reinforce; to provide physical support

Undergird

To support from below; to provide an underlying foundation

Utilize

To use

Employ

To make use of a skill or resource

Exploit

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

Leverage

To make use of, to achieve a particular result

Expedite

No speed something up/ to do smth quickly

Facilitate

To assist / to aid the progress

Accommodate

To provide something needed or wanted

Apt

Appropriate/relevant

Relevant

Important

Pertinent

Important to the current situation or matter

Efficacious

Producing the desired outcome or result

Means

A method or tool used to achieved a result or objective

Medium

A method or tool for doing something

Mechanism

A system or process designed for particular goal

Benign

Gentle and kind/ not harmful

Innocuous

No harm or offense

Boon

Smth which provides a benefit or advantage

Bane

Something that causes a great nuisance

Nuisance

Smth that causes annoyance

Forestall

To prevent smth from happening by acting before it can occur

Preclude

To make something impossible; to prevent smth from happening

Impede

To slow or delay the progress of smth

Inhibit

To restrain or hold back; to prevent someone or smth from doing smth

Hamper

To slow the movement or progress of sm1 or smth

Hinder

To slow or obstruct the progress of sm1 or smth

Thwart

To successfully stop sm1 or smth; to prevent smth from happening

Encumber

To weigh down or hinder smth or sm1

Undermine

To gradually damage or weaken something or someone

Compromise

To endanger or weaken

Crude

Unfinished

Makeshift

Serving as a temporary substitute

Rudimentary

Basic or simple in form

Exacerbate

To make more severe

Aggravate

To cause annoyance

Endanger

To cause to be in danger

jeopardize

To put someone or something in danger or at risk

Adverse

Unfavorable or harmful

preventing or opposing success

Detrimental

harmful

Insidious

Subtle or dangerous

Pernicious

Extremely harmful or wicked