Verbseoul.
하다 verb
낭비하다nangbihadato waste, to squander

To say to waste, to squander politely in the present tense, use 낭비해요 (nahng-bee-hae-yoh). Below is the full conjugation of 낭비하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
낭비해
nahng-bee-hae
낭비해요
nahng-bee-hae-yoh
낭비합니다
nahng-bee-hahm-nee-dah
Past
낭비했어
nahng-bee-hae-ssuh
낭비했어요
nahng-bee-hae-ssuh-yoh
낭비했습니다
nahng-bee-hae-sseum-nee-dah
Future
낭비할 거야
nahng-bee-hahl- -guh-yah
낭비할 거예요
nahng-bee-hahl- -guh-yae-yoh
낭비할 겁니다
nahng-bee-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
낭비하세요
nahng-bee-hah-sae-yoh
Suggestion / Let's Polite (요)
낭비해요
nahng-bee-hae-yoh
Question Polite (요)
낭비해요?
nahng-bee-hae-yoh-?
Connective “and” — (고)
낭비하고
nahng-bee-hah-goh
Conditional “if” — (면)
낭비하면
nahng-bee-hah-myuhn
Noun form — (기)
낭비함
nahng-bee-hahm