Synonyms of the word

pivotal

• adj. Of, relating to, or being a pivot.
• adj. Being of crucial importance; central, key.

crucial

• adj. Being essential or decisive for determining the outcome or future of something; extremely important.
• adj. (archaic) Cruciform or cruciate; cross-shaped.
• adj. (slang, chiefly Jamaica) Term of approval, particularly when applied to reggae music.

important

• adj. Having relevant and crucial value.

polar

• adj. Of, relating to, measured from, or referred to a geographic pole (the North Pole or South Pole).
• adj. (space sciences) Of an orbit that passes over, or near, one of these poles.
• adj. (chemistry) Having a dipole; ionic.
• adj. (mathematics) Of a coordinate system, specifying the location of a point in a plane by using a radius…
• adj. (linguistics, of a question) Having but two possible answers, yes and no.