IPA: /ˌɪn.dɪˈsaɪ.sɪv/
KK: /ɪnˈdɪsɪsɪv/
Someone who has difficulty making decisions or is unable to choose between options.
She was indecisive about which dress to wear to the party.
Indecisive → It is formed from "in-" (meaning not) and "decidere" (meaning to cut off or determine). The word describes a state of not being able to make a decision or cut off options.
Think of someone who is 'not' ('in-') able to 'determine' ('decidere') what to choose — that's why indecisive means unable to make a decision.